VOLTAGE-TO-FREQUENCY/FREQUENCY-TO-VOLTAGE CONVERTERS

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "VOLTAGE-TO-FREQUENCY/FREQUENCY-TO-VOLTAGE CONVERTERS"

Transcription

1 VOLTAGE-TO-FREQUENCY/ FEATURES Voltage-to-Frequency Choice of Guaranteed Linearity: % %... 0.% DC to 00 khz (F/V) or Hz to 00kHz (V/F) Low Power Dissipation... mw Typ Single/Dual Supply Operation... + V to + V or ± V to ±.V Gain Temperature Stability... ± ppm/ C Typ Programmable Scale Factor Frequency-to-Voltage Operation... DC to 00 khz Choice of Guaranteed Linearity: % %... 0.% Programmable Scale Factor APPLICATIONS µp Data Acquisition -Bit Analog-to-Digital Converters Analog Data Transmission and Recording Phase-Locked Loops Frequency Meters/Tachometer Motor Control FM Demodulation FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION The // are low-cost voltage-tofrequency (V/F) converters utilizing low power CMOS technology. The converters accept a variable analog input signal and generate an output pulse train whose frequency is linearly proportional to the input voltage. The devices can also be used as highly-accurate frequency-to-voltage (F/V) converters, accepting virtually any input frequency waveform and providing a linearly-proportional voltage output. A complete V/F or F/V system only requires the addition of two capacitors, three resistors, and reference voltage. ORDERING INFORMATION Linearity Temperature Part No. (V/F) Package Range COD 0.0% -Pin 0 C to +0 C SOIC (Narrow) CPD 0.0% -Pin 0 C to +0 C Plastic DIP EJD 0.0% -Pin 0 C to + C CerDIP CPD 0.0% -Pin 0 C to +0 C Plastic DIP EJD 0.0% -Pin 0 C to + C CerDIP CPD 0.% -Pin 0 C to +0 C Plastic DIP EJD 0.% -Pin 0 C to + C CerDIP Input Voltage Integrator Capacitor R IN Reference Capacitor Integrator OpAmp Threshold Detector One Shot Pulse Output Pulse/ Output I REF Reference Voltage //- //9 -

2 VOLTAGE-TO-FREQUENCY/ ABSOLUTE MAXIMUM RATINGS* V SS... +V...0mA V OUT Max V OUT Common...V V SS....V Storage Temperature Range... C to +0 C Operating Temperature Range C Device... 0 C to +0 C E Device... 0 C to + C Package Dissipation (T A 0 C) -Pin CerDIP...00mW -Pin Plastic DIP...0mW -Pin SOIC...0mW Lead Temperature (Soldering, 0 sec) C *Static-sensitive device. Unused devices must be stored in conductive material. Protect devices from static discharge and static fields. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to Absolute Maximum Rating Conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS: = +V, V SS = V, V GND = 0V, = V, R BIAS = 00kΩ, Full Scale = 0kHz, unless otherwise specified. T A = + C, unless temperature range is specified ( 0 C to + C for E device, 0 C to +0 C for C device). VOLTAGE-TO-FREQUENCY Parameter Definition Min Typ Max Min Typ Max Min Typ Max Unit Accuracy Linearity 0 khz Output Deviation From Straight % Full Line Between Normalized Zero Scale and Full-Scale Input Linearity 00 khz Output Deviation From Straight % Full Line Between Normalized Zero Scale Reading and Full-Scale Input Gain Temperature Variation in Gain A Due to ± ± 0 ± ± 0 ± 0 ± 00 ppm/ C Drift (Note ) Temperature Change Full Scale Gain Variance Variation From Ideal Accuracy ± 0 ± 0 ± 0 % of Nominal Zero Offset (Note ) Correction at Zero Adjust for Zero ± 0 ± 0 ± 0 ± 0 ± 0 ± 00 mv Output When Input is Zero Zero Temperature Variation in Zero Offset Due to ± ± 0 ± ± 0 ± 0 ± 00 µv/ C Drift (Note ) Temperature Change Analog Input Full Scale Full-Scale Analog Input Current to µa Achieve Specified Accuracy Overrange Overrange Current µa Response Time Settling Time to 0.% Full Scale Cycle Digital Section V I OL = 0mA Logic "0" Output Voltage (Note ) V V OUT Max V OUT Voltage Range Between Output V Common (Note ) and Common Pulse Frequency µsec Output Width -

3 VOLTAGE-TO-FREQUENCY/ ELECTRICAL CHARACTERISTICS: (Cont.) = +V, V SS = V, V GND = 0, = V, R BIAS = 00kΩ, Full Scale = 0kHz, unless otherwise specified. T A = + C, unless temperature range is specified 0 C to + C for E device, 0 C to +0 C for C device. FREQUENCY-TO-VOLTAGE Parameter Definition Min Typ Max Min Typ Max Min Typ Max Unit Supply Current I DD Quiescent Current Required From Positive (Note ) Supply During Operation.. 0 ma I SS Quiescent Current Required From Negative (Note ) Supply During Operation.. 0 ma Supply Operating Range of Positive Supply... V V SS Supply Operating Range of Negative Supply... V Reference Voltage V SS Range of Voltage Reference Input... V Accuracy Nonlinearity (Note 0) Deviation From Ideal Transfer % Full Function as a Percentage Scale Full-Scale Voltage Input Frequency Frequency Range for Specified 0 00k 0 00k 0 00k Hz Range (Note and ) Nonlinearity Frequency Input Positive Excursion Voltage Required to Turn V Threshold Detector On Negative Excursion Voltage Required to Turn V Threshold Detector Off Minimum Positive Time Between Threshold µsec Pulse Width (Note ) Crossings Minimum Negative Time Between Threshold µsec Pulse Width (Note ) Crossings Input Impedance MΩ Analog Outputs Output Voltage Voltage Range of Op Amp Output V (Note 9) for Specified Nonlinearity Output Loading Resistive Loading at Output of kω Op Amp Supply Current I DD Quiescent Current Required From Positive (Note 0) Supply During Operation.. 0 ma I SS Quiescent Current Required From Negative (Note 0) Supply During Operation.. 0 ma Supply Operating Range of Positive Supply... V V SS Supply Operating Range of Negative Supply... V Reference Voltage V SS Range of Voltage Reference Input... V NOTES:. Full temperature range. Guaranteed, Not Tested.. = 0.. Full temperature range, I OUT = 0mA.. I OUT = 0µA.. Threshold Detect = V, Amp Out = 0V, Full Temperature Range. 0Hz to 00kHz.; Guaranteed, Not Tested. µsec minimum positive pulse width and 0. µsec minimum negative pulse width.. t R = t F = 0 nsec. 9. R L kω.; 0kΩ 0. Full temperature range, V IN = 0.V. -9

4 VOLTAGE-TO-FREQUENCY/ PIN CONFIGURATIONS -Pin Plastic DIP/CerDIP -Pin SOIC (Narrow) I BIAS I BIAS ZERO ADJ NC ZERO ADJ NC V SS OUT 0 AMPLIFIER OUT THRESHOLD DETECTOR FREQ/ OUT V SS V OUT REF 0 AMPLIFIER OUT THRESHOLD DETECTOR FREQ/ OUT GND 9 OUTPUT COMMON GND 9 OUTPUT COMMON PULSE FREQ OUT PULSE FREQ OUT NC = NO INTERNAL CONNECTION PIN DESCRIPTIONS Pin No. Symbol Description I BIAS This pin sets bias current in the. Connect to V SS through a 00 kω resistor. See text. Zero Adj Low frequency adjustment input. See text. Input current connection for the V/F converter. V SS Negative power supply voltage connection, typically V. OUT Reference capacitor connection. GND Analog ground. Voltage reference input, typically V. Pulse Freq Out Frequency output. This open drain output will pulse LOW each time the Freq threshold detector limit is reached. The pulse rate is proportional to input voltage. 9 Output Common Source connection for the open drain output FETs. See text. 0 Freq/ Out This open drain output is a square wave at one half the frequency of the pulse output (pin ). Output transitions of this pin occur on the rising edge of pin. Threshold Detect Input to the threshold detector. This pin is the frequency input during F/V operation. Amplifier Out Output of the integrator amplifier. NC No internal connection Positive power supply connection, typically +V. -90

5 VOLTAGE-TO-FREQUENCY/ INPUT V IN 0V 0V 0kΩ C INT 0pF R IN MΩ +V 0kΩ V OFFSET Figure. + +V THRESHOLD DETECT µsec DELAY C REF 0pF 0kΩ V AMP OUT OUT pf ZERO VOLTAGE-TO-FREQUENCY (V/F) CIRCUIT DESCRIPTION SELF- START R BIAS 00kΩ THRESHOLD DETECTOR 0kΩ 0pF OpAmp I BIAS The V/F converter operates on the principal of charge balancing. The operation of the is easily understood by referring to Figure. The input voltage (V IN ) is converted to a current ( ) by the input resistor. This current is then converted to a charge on the integrating capacitor and shows up as a linearly decreasing voltage at the output of the op amp. The lower limit of the output swing is set by the threshold detector, which causes the reference voltage to be applied to the reference capacitor for a time period long enough to charge the capacitor to the reference voltage. This action reduces the charge on the integrating capacitor by a fixed amount (q = C REF ), causing the op amp output to step up a finite amount. V SS V 0 Hz to 0 khz V/F Converter REFERENCE VOLTAGE (TYPICALLY V) GND f OUT f OUT / 0 9 OUTPUT COMMON +V +V R L 0kΩ R L 0kΩ At the end of the charging period, C REF is shorted out. This dissipates the charge stored on the reference capacitor, so that when the output again crosses zero the system is ready to recycle. In this manner, the continued discharging of the integrating capacitor by the input is balanced out by fixed charges from the reference voltage. As the input voltage is increased, the number of reference pulses required to maintain balance increases, which causes the output frequency to also increase. Since each charge increment is fixed, the increase in frequency with voltage is linear. In addition, the accuracy of the output pulse width does not directly affect the linearity of the V/F. The pulse must simply be long enough for full charge transfer to take place. -9

6 VOLTAGE-TO-FREQUENCY/ f OUT µsec TYP f OUT / /f AMP OUT 0V C REF C INT NOTES:. To adjust f MIN, set V IN = 0mV and adjust the 0kΩ offset for 0Hz output.. To adjust f MAX, set V IN = 0V and adjust R IN or for 0 khz output.. To increase f OUT MAX to 00kHz, change C REF to pf and C INT to pf.. For high-performance applications, use high-stability components for R IN, C REF, (metal film resistors and glass capacitors). Also, separate output ground (pin 9) from input ground (pin ). Figure. Output Waveforms The contains a "self-start" circuit to ensure the V/F converter always operates properly when power is first applied. In the event that, during power-on, the Op Amp output is below the threshold and C REF is already charged, a positive voltage step will not occur. The op-amp output will continue to decrease until it crosses the.0v threshold of the "self-start" comparator. When this happens, an internal resistor is connected to the op-amp input, which forces the output to go positive until the is in its normal operating mode. The utilizes low power CMOS processing for low input bias and offset currents with very low power dissipation. The open-drain N-channel output FETs provide high voltage and high current sink capability. VOLTAGE-TO-TIME MEASUREMENTS The output can be measured in the time domain as well as the frequency domain. Some microcomputers, for example, have extensive timing capability but limited counter capability. Also, the response time of a time domain measurement is only the period between two output pulses, while the frequency measurement must accumulate pulses during the entire counter timebase period. Time measurements can be made from either the 's Pulse Freq Out output or from the Freq/ output. The Freq/ output changes state on the rising edge of Pulse Freq Out, so Freq/ is a symmetrical square wave at one half the pulse output frequency. Timing measurements can therefore be made between successive Pulse Freq Out pulses, or while Freq/ is high (or low). PIN FUNCTIONS Threshold Detector Input In the V/F mode, this input is connected to the amplifier output (pin ) and triggers a µsec pulse when the input voltage passes through its threshold. In the F/V mode, the input frequency is applied to this input. The nominal threshold of the detector is halfway between the power supplies, or ( + V SS )/ ±00mV. The 's charge balancing V/F technique is not dependent on a precision comparator threshold, because the threshold only sets the lower limit of the op-amp output. The op-amp's peak-to-peak output swing, which determines the frequency, is only influenced by external capacitors and by. Pulse Freq Out This output is an open-drain N-channel FET which provides a pulse waveform whose frequency is proportional to the input voltage. This output requires a pull-up resistor and interfaces directly with MOS, CMOS, and TTL logic. Freq/ Out This output is an open-drain N-channel FET which provides a square wave one-half the frequency of the pulse frequency output. The Freq/ output will change state on the rising edge of Pulse Freq Out. This output requires a pullup resistor and interfaces directly with MOS, CMOS, and TTL logic. -9

7 VOLTAGE-TO-FREQUENCY/ Output Common The sources of both the Freq/ out and the Pulse Freq Out are connected to this pin. An output level swing from the drain voltage to ground or to the V SS supply may be obtained by connecting this pin to the appropriate point. R BIAS An external resistor, connected to V SS, sets the bias point for the. Specifications for the are based on R BIAS = 00kΩ ±0%, unless otherwise noted. Increasing the maximum frequency of the beyond 00kHz is limited by the pulse width of the Pulse Output (typically µsec). Reducing R BIAS will decrease the pulse width and increase the maximum operating frequency, but linearity errors will also increase. R BIAS can be reduced to 0kΩ, which will typically produce a maximum full scale frequency of 00kHz. Amplifier Out The output stage of the operational amplifier. During V/F operation, a negative-going ramp signal is available at this pin. In the F/V mode, a voltage proportional to the frequency input is generated. Zero Adjust This pin is the noninverting input of the operational amplifier. The low-frequency set point is determined by adjusting the voltage at this pin. The inverting input of the operational amplifier and the summing junction when connected in the V/F mode. An input current of 0µA is specified, but an overrange current up to 0µA can be used without detrimental effect to the circuit operation. connects the summing junction of an operational amplifier. Voltage sources cannot be attached directly, but must be buffered by external resistors. A reference voltage from either a precision source or the V SS supply is applied to this pin. Accuracy of the is dependent on the voltage regulation and temperature characteristics of the reference circuitry. Since the is a charge balancing V/F converter, the reference current will be equal to the input current. For this reason, the DC impedance of the reference voltage source must be kept low enough to prevent linearity errors. For linearity of 0.0%, a reference impedance of 00Ω or less is recommended. A 0.µF bypass capacitor should be connected from to ground. Out The charging current for C REF is supplied through this pin. When the op amp output reaches the threshold level, this pin is internally connected to the reference voltage and a charge, equal to x C REF, is removed from the integrator capacitor. After about µsec, this pin is internally connected to the summing junction of the op amp to discharge C REF. Break-before-make switching ensures that the reference voltage is not directly applied to the summing junction. V/F CONVERTER DESIGN INFORMATION Input/Output Relationships The output frequency (f OUT ) is related to the analog input voltage (V IN ) by the transfer equation: V Frequency out = IN R IN ( ) (C REF ) External Component Selection R IN The value of this component is chosen to give a fullscale input current of approximately 0µA: R IN V IN Full Scale. 0µA Example: 0V R IN = MΩ. 0µA Note that the value is an approximation and the exact relationship is defined by the transfer equation. In practice, the value of R IN typically would be trimmed to obtain fullscale frequency at V IN full scale (see "Adjustment Procedure"). Metal film resistors with % tolerance or better are recommended for high-accuracy applications because of their thermal stability and low-noise generation. C INT The exact value is not critical but is related to C REF by the relationship: C REF C INT 0 C REF. Improved stability and linearity are obtained when C INT C REF. Low-leakage types are recommended, although mica and ceramic devices can be used in applications where their temperature limits are not exceeded. Locate as close as possible to pins and. -9

8 VOLTAGE-TO-FREQUENCY/ C REF The exact value is not critical and may be used to trim the full-scale frequency (see "Input/Output Relationships"). Glass film or air trimmer capacitors are recommended because of their stability and low leakage. Locate as close as possible to pins and., V SS Power supplies of ±V are recommended. For highaccuracy requirements, 0.0% line and load regulation and 0.µF disc decoupling capacitors located near the pins are recommended. Adjustment Procedure Figure shows a circuit for trimming the zero location. Full scale may be trimmed by adjusting R IN,, or C REF. Recommended procedure for a 0kHz full-scale frequency is as follows: () Set V IN to 0 mv and trim the zero adjust circuit to obtain a 0Hz output frequency. () Set V IN to 0V and trim either R IN,, or C REF to obtain a 0kHz output frequency. If adjustments are performed in this order, there should be no interaction and they should not have to be repeated. Improved Single Supply V/F Converter Operation A which operates from a single to V variable power source is shown in Figure. This circuit uses two Zener diodes to set stable biasing levels for the. The Zener diodes also provide the reference voltage, so the output impedance and temperature coefficient of the Zeners will directly affect power supply rejection and temperature performance. Full scale adjustment is accomplished by trimming the input current. Trimming the reference voltage is not recommended for high accuracy applications unless an op amp is used as a buffer, because the requires a low impedance reference (see the pin description section for more information). The circuit of Figure will directly interface with CMOS logic operating at V to V. TTL or V CMOS logic can be accommodated by connecting the output pullup resistors to the +V supply. An optoisolator can also be used if an isolated output is required. C REF (pf) +pf khz = +V V SS = V R IN = MΩ V IN = +0V T A = + C 00 00kHz 0 (V) Figure. Recommended C REF vs -9

9 VOLTAGE-TO-FREQUENCY/ V IN 0.9 R GAIN OFFSET R IN MΩ V. kω kω 0. R 0 pf R V 0.0 µf 0.0 µf 0 pf V + = V TO V (FIXED) 0 0kΩ 0kΩ f OUT f OUT / 0V 0V 00 kω 9 V + 0V V V R R MΩ. MΩ MΩ 0kΩ kω 0kΩ f OUT = (V V ) (C REF ) (V IN V ) (V + V ) = + R IN (0.9 R +0. R ) Figure. Fixed Voltage Single Supply Operation.k* + to +V R 90k R 90k INPUT VOLTAGE (0 to 0V) R GAIN R 00k 00k R 9k Rp OFFSET 0k µf D.VZ D.VZ ANALOG GROUND C INT 0.µ C REF 00k THRESHOLD DETECT AMP OUT C REF IIN fout ZERO GND fout/ 0 VREF IBIAS OUTPUT COMMON VSS 9 0k 0k OUTPUT FREQUENCY DIGITAL GROUND COMPONENT SELECTION F/S FREQ. khz 0 khz 00 khz CREF 00pF 0pF pf CINT 00pF 0pF pf Figure. Voltage to Frequency -9

10 VOLTAGE-TO-FREQUENCY/ FREQUENCY-TO-VOLTAGE (F/V) CIRCUIT DESCRIPTION When used as an F/V converter, the generates an output voltage linearly proportional to the input frequency waveform. Each zero crossing at the threshold detector's input causes a precise amount of charge (q = C REF ) to be dispensed into the op amp's summing junction. This charge in turn flows through the feedback resistor, generating voltage pulses at the output of the op amp. A capacitor (C INT ) across R INT averages these pulses into a DC voltage which is linearly proportional to the input frequency. F/V CONVERTER DESIGN INFORMATION Input/Output Relationships The output voltage is related to the input frequency (f IN ) by the transfer equation: V OUT = [ C REF R INT ] f IN. The response time to a change in f IN is equal to (R INT C INT ). The amount of ripple on V OUT is inversely proportional to C INT and the input frequency. C INT can be increased to lower the ripple. Values of µf to 00µF are perfectly acceptable for low frequencies. When the is used in the single-supply mode, is defined as the voltage difference between pin and pin. Input Voltage Levels The input frequency is applied to the Threshold Detector input (Pin ). As discussed in the V/F circuit section of this data sheet, the threshold of pin is approximately ( + V SS ) / ±00mV. Pin 's input voltage range extends from to about. V below the threshold. If the voltage on pin goes more than. volts below the threshold, the V/F mode startup comparator will turn on and corrupt the output voltage. The Threshold Detector input has about 00 mv of hysteresis. In ± V applications, the input voltage levels for the are ±00mV, minimum. If the frequency source being measured is unipolar, such as TTL or CMOS operating from a +V source, then an AC coupled level shifter should be used. One such circuit is shown in Figure a. The level shifter circuit in Figure b can be used in single supply F/V applications. The resistor divider ensures that the input threshold will track the supply voltages. The diode clamp prevents the input from going far enough in the negative direction to turn on the startup comparator. The diode's forward voltage decreases by. mv/ C, so for high ambient temperature operation two diodes in series are recommended. +V +V to +V 0k Frequency Input k 0.0µF DET Frequency Input k 0.0µF DET +V IN9.0M +V IN9.0M 0V 0V GND V SS 0.µF 0k V SS V (A) ±V Supply (B) Single Supply Figure. Frequency Input Level Shifter -9

11 VOLTAGE-TO-FREQUENCY/ +V V + * A A A THRESHOLD DETECT f IN SEE FIGURE µsec DELAY THRESHOLD DETECTOR f OUT/ 0 OUTPUT COMMON f OUT OUT 9 * V + * * OPTIONAL IF BUFFER IS NEEDED kω OFFSET +V 00kΩ ZERO OP AMP + pf 0pF AMP OUT C REF pf R INT MΩ + SEE EQUATION, PAGE C INT 000pF V O.kΩ I BIAS V SS GND V 0 kω Figure. (TYPICALLY V) DC 0 khz F/V Converter Input Buffer 0.µsec MIN INPUT f OUT.0µsec MIN DELAY = µsec f OUT and f OUT / are not used in the F/V mode. However, these outputs may be useful for some applications, such as a buffer to feed additional circuitry. Then, f OUT will follow the input frequency waveform, except that f OUT will go high µsec after f IN goes high; f OUT / will be squarewave with a frequency of one-half f OUT. If these outputs are not used, pins, 9 and 0 should be connected to ground. f OUT / Figure. F/V Digital Outputs -9

12 VOLTAGE-TO-FREQUENCY/ V + = 0V to V 0k GND.V.0µF 0k 00k Frequency Input Offset Adjust k 00k 0.0µF IN9 V +.0k.0M ZERO DET I BIAS OUT AMP OUT V SS GND pf M.00µF V OUT 0.µF.0k 00k Note: The output is referenced to pin, which is at.v (Vz). For frequency meter applications, a ma meter with a series-scaling resistor can be placed across pins and. Figure 9. F/V Single Supply F/V Converter Output Filtering The output of the has a sawtooth ripple superimposed on a DC level. The ripple will be rejected if the output is converted to a digital value by an integrating analog to digital converter, such as the TC0 or TC09. The ripple can also be reduced by increasing the value of the integrating capacitor, although this will reduce the response time of the F/V converter. The sawtooth ripple on the output of an F/V can be eliminated without affecting the F/V's response time by using the circuit in Figure 0. The circuit is a capacitance multiplier, where the output coupling capacitor is multiplied by the AC gain of the op amp. A moderately fast op amp, such as the TL0, should be used. OUT AMP OUT GND pf M.00µF 00.0µF M 0.µF + M + TL0 V OUT Figure 0. Ripple Filter -9

13 VOLTAGE-TO-FREQUENCY/ F/V POWER-ON RESET In F/V mode, the output voltage will occasionally be at its maximum value when power is first applied. This condition remains until the first pulse is applied to f IN. In most frequency-measurement applications this is not a problem, because proper operation begins as soon as the frequency input is applied. 000pF In some cases, however, the output must be zero at power-on without a frequency input. In such cases, a capacitor connected from pin to will usually be sufficient to pulse the and provide a power-on reset (see Figure A). Where predictable power-on operation is critical, a more complicated circuit, such as Figure B, may be required. f IN kω THRESHOLD DETECTOR (A) V CC B R C CLRA (B) 00kΩ µf A CD Q V SS f IN Figure. Power-On Operation/Reset To TC

Absolute Maximum Ratings

Absolute Maximum Ratings RC15 Voltage-to-Frequency Converters www.fairchildsemi.com Features Single supply operation Pulse output DTL/TTL/CMOS compatible Programmable scale factor (K) High noise rejection Inherent monotonicity

More information

MM74HC4046 CMOS Phase Lock Loop

MM74HC4046 CMOS Phase Lock Loop CMOS Phase Lock Loop General Description The MM74HC4046 is a low power phase lock loop utilizing advanced silicon-gate CMOS technology to obtain high frequency operation both in the phase comparator and

More information

HV9931 Unity Power Factor LED Lamp Driver

HV9931 Unity Power Factor LED Lamp Driver Unity Power Factor LED Lamp Driver Initial Release Features Constant Output Current Large Step-Down Ratio Unity Power Factor Low Input Current Harmonic Distortion Fixed Frequency or Fixed Off-Time Operation

More information

NTE2053 Integrated Circuit 8 Bit MPU Compatible A/D Converter

NTE2053 Integrated Circuit 8 Bit MPU Compatible A/D Converter NTE2053 Integrated Circuit 8 Bit MPU Compatible A/D Converter Description: The NTE2053 is a CMOS 8 bit successive approximation Analog to Digital converter in a 20 Lead DIP type package which uses a differential

More information

+1.0V Micropower SOT23 Comparators

+1.0V Micropower SOT23 Comparators 19-1808; Rev 1; 1/07 +1.0V Micropower SOT23 Comparators General Description The micropower comparators are optimized for single-cell systems, and are fully specified for operation from a single supply

More information

Monolithic 12-Bit DIGITAL-TO-ANALOG CONVERTERS

Monolithic 12-Bit DIGITAL-TO-ANALOG CONVERTERS FPO FPO 41% DAC80 DAC80P Monolithic 12-Bit DIGITAL-TO-ANALOG CONVERTERS FEATURES INDUSTRY STANDARD PINOUT FULL ±10V SWING WITH V CC = ±12VDC DIGITAL INPUTS ARE TTL- AND CMOS-COMPATIBLE GUARANTEED SPECIFICATIONS

More information

10-Bit A/D Converter AD571*

10-Bit A/D Converter AD571* a FEATURES Complete A/D Converter with Reference and Clock Fast Successive Approximation Conversion: 40 s max No Missing Codes Over Temperature 0 C to +0 C: AD5K 55 C to +5 C: AD5S Digital Multiplexing:

More information

An9931. An9931 Unity Power Factor LED Lamp Driver

An9931. An9931 Unity Power Factor LED Lamp Driver An9931 Unity Power Factor LED Lamp Driver Features Constant output current Large step-down ratio Unity power factor Low input current harmonic distortion Fixed frequency or fixed off-time operation Internal

More information

Data Sheet. IC timers 555 and 556. RS stock numbers , , ,

Data Sheet. IC timers 555 and 556. RS stock numbers , , , Data Pack J Issued March 1997 232-2217 Data Sheet IC timers 555 and 556 RS stock numbers 305-478, 305-838, 638-942, 638-958 A range of IC timers suitable for monostable or astable operation. In the monostable

More information

NTE923 & NTE923D Integrated Circuit Precision Voltage Regulator

NTE923 & NTE923D Integrated Circuit Precision Voltage Regulator NTE923 & NTE923D Integrated Circuit Precision Voltage Regulator Description: The NTE923 and NTE923D are voltage regulators designed primarily for series regulator applications. By themselves, these devices

More information

LM555 Timer. Connection Diagram

LM555 Timer. Connection Diagram Timer General Description The is a highly stable device for generating accurate time delays or oscillation. Additional terminals are provided for triggering or resetting if desired. In the time delay mode

More information

Precision Gain = 10 DIFFERENTIAL AMPLIFIER

Precision Gain = 10 DIFFERENTIAL AMPLIFIER Precision Gain = DIFFERENTIAL AMPLIFIER FEATURES ACCURATE GAIN: ±.% max HIGH COMMON-MODE REJECTION: 8dB min NONLINEARITY:.% max EASY TO USE PLASTIC 8-PIN DIP, SO-8 SOIC PACKAGES APPLICATIONS G = DIFFERENTIAL

More information

General purpose CMOS timer

General purpose CMOS timer DESCIPTION The is a CMOS timer providing significantly improved performance over the standard NE/SE555 timer, while at the same time being a direct replacement for those devices in most applications. Improved

More information

SELF-OSCILLATING HALF-BRIDGE DRIVER

SELF-OSCILLATING HALF-BRIDGE DRIVER Features Floating channel designed for bootstrap operation Fully operational to +600V olerant to negative transient voltage dv/dt immune Undervoltage lockout Programmable oscillator frequency 1 f = 1.4

More information

OBSOLETE. 50 ma Switched Capacitor Voltage Boost with Regulated Output ADP3607 REV. 0. Figure 1. Typical Application Circuit FUNCTIONAL BLOCK DIAGRAM

OBSOLETE. 50 ma Switched Capacitor Voltage Boost with Regulated Output ADP3607 REV. 0. Figure 1. Typical Application Circuit FUNCTIONAL BLOCK DIAGRAM a FEATURES Fully Regulated Output Voltage (5 V and Adjustable) Input Voltage Range From 3 V to 5 V 5 ma Output Current Output Accuracy: 5% High Switching Frequency: 25 khz SO-8 and TSSOP-8 Packages 4 C

More information

QUAD/DUAL P-CHANNEL MATCHED PAIR MOSFET ARRAY

QUAD/DUAL P-CHANNEL MATCHED PAIR MOSFET ARRAY ADVANCED LINEAR DEVICES, INC. ALD07/ALD7 QUAD/DUAL P-CHANNEL MATCHED PAIR MOSFET ARRAY GENERAL DESCRIPTION The ALD07/ALD7 are monolithic quad/dual P-channel enhancement mode matched MOSFET transistor arrays

More information

CA723, CA723C. Voltage Regulators Adjustable from 2V to 37V at Output Currents Up to 150mA without External Pass Transistors. Features.

CA723, CA723C. Voltage Regulators Adjustable from 2V to 37V at Output Currents Up to 150mA without External Pass Transistors. Features. CA73, CA73C Data Sheet April 1999 File Number 788. Voltage Regulators Adjustable from V to 37V at Output Currents Up to 1mA without External Pass Transistors The CA73 and CA73C are silicon monolithic integrated

More information

NE/SA/SE555/SE555C PIN CONFIGURATIONS FEATURES APPLICATIONS ORDERING INFORMATION. D, N, FE Packages. F Package

NE/SA/SE555/SE555C PIN CONFIGURATIONS FEATURES APPLICATIONS ORDERING INFORMATION. D, N, FE Packages. F Package DESCIPTION The monolithic timing circuit is a highly stable controller capable of producing accurate time delays, or oscillation. In the time delay mode of operation, the time is precisely controlled by

More information

DAC0800/DAC Bit Digital-to-Analog Converters

DAC0800/DAC Bit Digital-to-Analog Converters DAC0800/DAC0802 8-Bit Digital-to-Analog Converters General Description The DAC0800 series are monolithic 8-bit high-speed current-output digital-to-analog converters (DAC) featuring typical settling times

More information

The output signal may be of the same form as the input signal, i.e. V in produces V out

The output signal may be of the same form as the input signal, i.e. V in produces V out What is an amplifier? Operational Amplifiers A device that takes an input (current, voltage, etc.) and produces a correlated output Input Signal Output Signal Usually the output is a multiple of the input

More information

www.jameco.com 1-800-831-4242

www.jameco.com 1-800-831-4242 Distributed by: www.jameco.com 1-800-831-4242 The content and copyrights of the attached material are the property of its owner. LF411 Low Offset, Low Drift JFET Input Operational Amplifier General Description

More information

XR-2206 Monolithic Function Generator

XR-2206 Monolithic Function Generator ...the analog plus company TM XR-0 Monolithic Function Generator FEATURES Low-Sine Wave Distortion, 0.%, Typical Excellent Temperature Stability, 0ppm/ C, Typ. Wide Sweep Range, 000:, Typical Low-Supply

More information

Dual High Speed, Implanted BiFET Op Amp AD644

Dual High Speed, Implanted BiFET Op Amp AD644 a FEATURES Matched Offset Voltage Matched Offset Voltage Over Temperature Matched Bias Currents Crosstalk 124 db at 1 khz Low Bias Current: 35 pa max Warmed Up Low Offset Voltage: 500 V max Low Input Voltage

More information

AP331A XX G - 7. Lead Free G : Green. Packaging (Note 2)

AP331A XX G - 7. Lead Free G : Green. Packaging (Note 2) Features General Description Wide supply Voltage range: 2.0V to 36V Single or dual supplies: ±1.0V to ±18V Very low supply current drain (0.4mA) independent of supply voltage Low input biasing current:

More information

XR-2211A FSK Demodulator/ Tone Decoder

XR-2211A FSK Demodulator/ Tone Decoder ...the analog plus company TM XR-A FSK Demodulator/ Tone Decoder FEATURES APPLICATIONS June 997 3 Wide Frequency Range, 0.0Hz to 300kHz Wide Supply Voltage Range, 4.5V to 0V HCMOS/TTL/Logic Compatibility

More information

PART MAX5480BEEE MAX5480AEEE TOP VIEW CS D0 (LSB)

PART MAX5480BEEE MAX5480AEEE TOP VIEW CS D0 (LSB) 9-; Rev ; /97 General Description The is a CMOS, -bit digital-to-analog converter (DAC) that interfaces directly with most microprocessors. On-chip input latches make the DAC load cycle interface similar

More information

SELF-OSCILLATING HALF-BRIDGE DRIVER V OFFSET. Packages

SELF-OSCILLATING HALF-BRIDGE DRIVER V OFFSET. Packages Preliminary Data Sheet No. PD60062K SELFOSCILLATING HALFBIDGE DIVE Features Integrated 600V halfbridge gate driver 15.6V zener clamp on Vcc True micropower start up Tighter initial deadtime control Low

More information

LM118/LM218/LM318 Operational Amplifiers

LM118/LM218/LM318 Operational Amplifiers LM118/LM218/LM318 Operational Amplifiers General Description The LM118 series are precision high speed operational amplifiers designed for applications requiring wide bandwidth and high slew rate. They

More information

ZXCT1081 HIGH VOLTAGE HIGH-SIDE CURRENT MONITOR. Description. Pin Assignments. Applications. Features. Typical Application Circuit ZXCT1081

ZXCT1081 HIGH VOLTAGE HIGH-SIDE CURRENT MONITOR. Description. Pin Assignments. Applications. Features. Typical Application Circuit ZXCT1081 HIGH VOLTAGE HIGH-SIDE CURRENT MONITOR Description Pin Assignments The is a high side current sense monitor with a gain of 10 and a voltage output. Using this device eliminates the need to disrupt the

More information

STEP-DOWN SWITCHING VOLTAGE REGULATOR IN HERMETIC ISOLATED PACKAGE

STEP-DOWN SWITCHING VOLTAGE REGULATOR IN HERMETIC ISOLATED PACKAGE OM7 Series OMH7 Series STEP-DOWN SWITCHING VOLTAGE REGULATOR IN HERMETIC ISOLATED PACKAGE. Amp, V, V, V And Adjustable Voltage Versions In MO-78 Metal Package FEATURES Similar To Industry Standard LM7

More information

4 20 ma Transmitter AD694*

4 20 ma Transmitter AD694* a FEATURES 4 20 ma, 0 20 ma Output Ranges Precalibrated Input Ranges: 0 V to 2 V, 0 V to 10 V Precision Voltage Reference Programmable to 2.000 V or 10.000 V Single or Dual Supply Operation Wide Power

More information

Universal Input Switchmode Controller

Universal Input Switchmode Controller End of Life. Last Available Purchase Date is 31-Dec-2014 Si9120 Universal Input Switchmode Controller FEATURES 10- to 450-V Input Range Current-Mode Control 125-mA Output Drive Internal Start-Up Circuit

More information

Operational Amplifiers: Part 2. Non-ideal Behavior of Feedback Amplifiers DC Errors and Large-Signal Operation

Operational Amplifiers: Part 2. Non-ideal Behavior of Feedback Amplifiers DC Errors and Large-Signal Operation Operational Amplifiers: Part 2 Non-ideal Behavior of Feedback Amplifiers DC Errors and Large-Signal Operation by Tim J. Sobering Analog Design Engineer & Op Amp Addict Summary of Ideal Op Amp Assumptions

More information

DATA SHEET. TDA8560Q 2 40 W/2 Ω stereo BTL car radio power amplifier with diagnostic facility INTEGRATED CIRCUITS. 1996 Jan 08

DATA SHEET. TDA8560Q 2 40 W/2 Ω stereo BTL car radio power amplifier with diagnostic facility INTEGRATED CIRCUITS. 1996 Jan 08 INTEGRATED CIRCUITS DATA SHEET power amplifier with diagnostic facility Supersedes data of March 1994 File under Integrated Circuits, IC01 1996 Jan 08 FEATURES Requires very few external components High

More information

SELF-OSCILLATING HALF-BRIDGE DRIVER

SELF-OSCILLATING HALF-BRIDGE DRIVER Features n Floating channel designed for bootstrap operation Fully operational to +600V Tolerant to negative transient voltage dv/dt immune n Undervoltage lockout n Programmable oscillator frequency 1

More information

Precision ANALOG MULTIPLIER

Precision ANALOG MULTIPLIER Precision ANALOG MULTIPLIER FEATURES ±0.5% max 4-QUADRANT ACCURACY WIDE BANDWIDTH: 1MHz min, 3MHz typ ADJUSTABLE SCALE FACTOR STABLE AND RELIABLE MONOLITHIC CONSTRUCTION LOW COST APPLICATIONS PRECISION

More information

LC2 MOS Quad 8-Bit D/A Converter AD7226

LC2 MOS Quad 8-Bit D/A Converter AD7226 a FEATURES Four 8-Bit DACs with Output Amplifiers Skinny 20-Pin DIP, SOIC and 20-Terminal Surface Mount Packages Microprocessor Compatible TTL/CMOS Compatible No User Trims Extended Temperature Range Operation

More information

Op Amp Circuit Collection

Op Amp Circuit Collection Op Amp Circuit Collection Note: National Semiconductor recommends replacing 2N2920 and 2N3728 matched pairs with LM394 in all application circuits. Section 1 Basic Circuits Inverting Amplifier Difference

More information

120 ma Switched Capacitor Voltage Inverter with Regulated Output ADP3605

120 ma Switched Capacitor Voltage Inverter with Regulated Output ADP3605 a FEATURES Fully Regulated Output Voltage ( V and Adjustable) High Output Current: 0 ma Output Accuracy: % 50 khz Switching Frequency Low Shutdown Current: A Typical Input Voltage Range from V to 6 V SO-8

More information

TLI4946. Datasheet TLI4946K, TLI4946-2K, TLI4946-2L. Sense and Control. May 2009

TLI4946. Datasheet TLI4946K, TLI4946-2K, TLI4946-2L. Sense and Control. May 2009 May 2009 TLI4946 High Precision Hall Effect Latches for Industrial and Consumer Applications TLI4946K, TLI4946-2K, TLI4946-2L Datasheet Rev. 1.0 Sense and Control Edition 2009-05-04 Published by Infineon

More information

Programmable Single-/Dual-/Triple- Tone Gong SAE 800

Programmable Single-/Dual-/Triple- Tone Gong SAE 800 Programmable Single-/Dual-/Triple- Tone Gong Preliminary Data SAE 800 Bipolar IC Features Supply voltage range 2.8 V to 18 V Few external components (no electrolytic capacitor) 1 tone, 2 tones, 3 tones

More information

EXPERIMENT 1.2 CHARACTERIZATION OF OP-AMP

EXPERIMENT 1.2 CHARACTERIZATION OF OP-AMP 1.17 EXPERIMENT 1.2 CHARACTERIZATION OF OPAMP 1.2.1 OBJECTIVE 1. To sketch and briefly explain an operational amplifier circuit symbol and identify all terminals 2. To list the amplifier stages in a typical

More information

SP724. TVS Diode Arrays

SP724. TVS Diode Arrays The is a quad array of transient voltage clamping circuits designed to suppress ESD and other transient over-voltage events. The is used to help protect sensitive digital or analog input circuits on data,

More information

AN-581 APPLICATION NOTE

AN-581 APPLICATION NOTE a AN-58 APPLICATION NOTE One Technology Way P.O. Box 906 Norwood, MA 02062-906 Tel: 78/329-4700 Fax: 78/326-8703 www.analog.com Biasing and Decoupling Op Amps in Single Supply Applications by Charles Kitchin

More information

DS1621 Digital Thermometer and Thermostat

DS1621 Digital Thermometer and Thermostat Digital Thermometer and Thermostat www.dalsemi.com FEATURES Temperature measurements require no external components Measures temperatures from 55 C to +125 C in 0.5 C increments. Fahrenheit equivalent

More information

MM74HC4538 Dual Retriggerable Monostable Multivibrator

MM74HC4538 Dual Retriggerable Monostable Multivibrator MM74HC4538 Dual Retriggerable Monostable Multivibrator General Description The MM74HC4538 high speed monostable multivibrator (one shots) is implemented in advanced silicon-gate CMOS technology. They feature

More information

FIGURE 2. FIGURE 3. FIGURE 4. 2

FIGURE 2. FIGURE 3. FIGURE 4.  2 Applications of the LM3524 Pulse-Width-Modulator The LM3524 Regulating Pulse-Width-Modulator is commonly used as the control element in switching regulator power supplies. This is in keeping with its intended

More information

SINGLE TIMER FEATURES APPLICATIONS ORDERING INFORMATION BLOCK DIAGRAM 8 DIP

SINGLE TIMER FEATURES APPLICATIONS ORDERING INFORMATION BLOCK DIAGRAM 8 DIP The LM555/I is a highly stable controller capable of producing accurate timing pulses. With monostable operation, the time delay is controlled by one external and one capacitor. With astable operation,

More information

LM19 2.4V, 10µA, TO-92 Temperature Sensor

LM19 2.4V, 10µA, TO-92 Temperature Sensor LM19 2.4V, 10µA, TO-92 Temperature Sensor General Description The LM19 is a precision analog output CMOS integratedcircuit temperature sensor that operates over a 55 C to +130 C temperature range. The

More information

FM-IF with Counter Output, Field Strength Indicator, Noise Detector and MUTE Setting TDA 4320X. 1 Overview

FM-IF with Counter Output, Field Strength Indicator, Noise Detector and MUTE Setting TDA 4320X. 1 Overview FM-IF with Counter Output, Field Strength Indicator, Noise Detector and MUTE Setting TDA 4320X 1 Overview 1.1 Features 7-stage limiter amplifier Coincidence demodulator Counter output with request input

More information

HAL300 Differential Hall Effect Sensor IC MICRONAS. Edition July 15, DS MICRONAS

HAL300 Differential Hall Effect Sensor IC MICRONAS. Edition July 15, DS MICRONAS MICRONAS HAL3 Differential Hall Effect Sensor IC Edition July 15, 1998 6251-345-1DS MICRONAS Differential Hall Effect Sensor IC in CMOS technology Introduction The HAL3 is a differential Hall switch produced

More information

LMS mA, Low Dropout Voltage Regulator with Auto Discharge Function in SC70

LMS mA, Low Dropout Voltage Regulator with Auto Discharge Function in SC70 LMS5214 80mA, Low Dropout Voltage Regulator with Auto Discharge Function in SC70 General Description Features The LMS5214 is a µcap, low dropout voltage regulator with very low quiescent current, 110µA

More information

LM555 LM555C Timer. Applications Y. Features Y. Schematic Diagram. February 1995

LM555 LM555C Timer. Applications Y. Features Y. Schematic Diagram. February 1995 LM555 LM555C Timer General Description The LM555 is a highly stable device for generating accurate time delays or oscillation Additional terminals are provided for triggering or resetting if desired In

More information

Noninverting Buffer / CMOS Logic Level Shifter

Noninverting Buffer / CMOS Logic Level Shifter Noninverting Buffer / CMOS Logic Level Shifter with LSTTL Compatible Inputs The is a single gate noninverting buffer fabricated with silicon gate CMOS technology. It achieves high speed operation similar

More information

LM386 Low Voltage Audio Power Amplifier

LM386 Low Voltage Audio Power Amplifier Low Voltage Audio Power Amplifier General Description The LM386 is a power amplifier designed for use in low voltage consumer applications. The gain is internally set to 20 to keep external part count

More information

ICS LOW PHASE NOISE ZERO DELAY BUFFER AND MULTIPLIER. Description. Features. Block Diagram DATASHEET

ICS LOW PHASE NOISE ZERO DELAY BUFFER AND MULTIPLIER. Description. Features. Block Diagram DATASHEET DATASHEET ICS670-03 Description The ICS670-03 is a high speed, low phase noise, Zero Delay Buffer (ZDB) which integrates IDT s proprietary analog/digital Phase Locked Loop (PLL) techniques. It is identical

More information

Current Feedback Op Amp Applications Circuit Guide

Current Feedback Op Amp Applications Circuit Guide Current Feedback Op Amp Applications Circuit Guide Introduction No two high-speed application are the same or at least it seems that way. Nonetheless, while every system has its particular requirements,

More information

Features. Applications

Features. Applications LM555 Timer General Description The LM555 is a highly stable device for generating accurate time delays or oscillation. Additional terminals are provided for triggering or resetting if desired. In the

More information

High-Speed, 5 V, 0.1 F CMOS RS-232 Driver/Receivers ADM202/ADM203

High-Speed, 5 V, 0.1 F CMOS RS-232 Driver/Receivers ADM202/ADM203 a FEATURES kb Transmission Rate ADM: Small (. F) Charge Pump Capacitors ADM3: No External Capacitors Required Single V Power Supply Meets EIA-3-E and V. Specifications Two Drivers and Two Receivers On-Board

More information

LM555 LM555C Timer. Applications Y. Features Y. Schematic Diagram. February 1995

LM555 LM555C Timer. Applications Y. Features Y. Schematic Diagram. February 1995 LM555 LM555C Timer General Description The LM555 is a highly stable device for generating accurate time delays or oscillation Additional terminals are provided for triggering or resetting if desired In

More information

IR2153(D)(S) &(PbF) SELF-OSCILLATING HALF-BRIDGE DRIVER. Features. Product Summary. Packages. Description. Typical Connections

IR2153(D)(S) &(PbF) SELF-OSCILLATING HALF-BRIDGE DRIVER. Features. Product Summary. Packages. Description. Typical Connections Features Integrated 600V halfbridge gate driver 15.6V zener clamp on Vcc True micropower start up Tighter initial deadtime control Low temperature coefficient deadtime Shutdown feature (1/6th Vcc) on C

More information

LED Driver Switch-Mode LED Driver IC with High Current Accuracy L1 Q1 GATE R SC SC 4 OVP Q2 R T 7 FAULT FDBK C C COMP PWMD

LED Driver Switch-Mode LED Driver IC with High Current Accuracy L1 Q1 GATE R SC SC 4 OVP Q2 R T 7 FAULT FDBK C C COMP PWMD SEMICONDUCTOR TECHNICAL DATA FC9911 LED Driver Switch-Mode LED Driver IC with High Current Accuracy Features Switch mode controller for single switch drivers Buck Boost Buck-boost SEPIC Works with high

More information

1.5A Very L.D.O Voltage Regulator LM29150/29151/29152

1.5A Very L.D.O Voltage Regulator LM29150/29151/29152 FEATURES High Current Capability 1.5A Low Dropout Voltage 350mV Low Ground Current Accurate 1% Guaranteed Initial Tolerance Extremely Fast Transient Response Reverse-Battery and "Load Dump" Protection

More information

Stepper Motor Drive Circuit

Stepper Motor Drive Circuit Stepper Motor Drive Circuit FEATURES Half-step and Full-step Capability Bipolar Constant Current Motor Drive Built-in Fast Recovery Schottky Commutating Diodes Wide Range of Current Control 5-1000mA Wide

More information

DACPORT Low Cost, Complete µp-compatible 8-Bit DAC AD558*

DACPORT Low Cost, Complete µp-compatible 8-Bit DAC AD558* a FEATURES Complete -Bit DAC Voltage Output 2 Calibrated Ranges Internal Precision Bandgap Reference Single-Supply Operation: +5 V to + V Full Microprocessor Interface Fast: 1 s Voltage Settling to 1/2

More information

A Constant-current Source

A Constant-current Source A Constant-current Source Frequently, such as when you want to measure temperature with a silicon diode, it is desirable to have a source of a reproducible, constant current. Many laboratory power supplies

More information

ZN448/ZN449 8-BIT MICROPROCESSOR COMPATIBLE A-D CONVERTER

ZN448/ZN449 8-BIT MICROPROCESSOR COMPATIBLE A-D CONVERTER ZN448/ZN449 8BIT MICROPROCESSOR COMPATIBLE AD CONERTER DS3013. The ZN448 and ZN449 are 8bit successive approximation AD converters designed to be easily interfaced to microprocessors. All active circuitry

More information

Supply voltage Supervisor TL77xx Series. Author: Eilhard Haseloff

Supply voltage Supervisor TL77xx Series. Author: Eilhard Haseloff Supply voltage Supervisor TL77xx Series Author: Eilhard Haseloff Literature Number: SLVAE04 March 1997 i IMPORTANT NOTICE Texas Instruments (TI) reserves the right to make changes to its products or to

More information

TDA4605 CONTROL CIRCUIT FOR SWITCH MODE POWER SUPPLIES USING MOS TRANSISTORS

TDA4605 CONTROL CIRCUIT FOR SWITCH MODE POWER SUPPLIES USING MOS TRANSISTORS CONTROL CIRCUIT FOR SWITCH MODE POWER SUPPLIES USING MOS TRANSISTORS Fold-Back Characteristic provides Overload Protection for External Diodes Burst Operation under Short-Circuit and no Load Conditions

More information

INTEGRATED CIRCUITS DATA SHEET. TDA8340 TDA8341 Television IF amplifier and demodulator. Product specification File under Integrated Circuits, IC02

INTEGRATED CIRCUITS DATA SHEET. TDA8340 TDA8341 Television IF amplifier and demodulator. Product specification File under Integrated Circuits, IC02 INTEGRATED CIRCUITS DATA SHEET Television IF amplifier and demodulator File under Integrated Circuits, IC02 November 1987 DESCRIPTION The ;Q and ;Q are integrated IF amplifier and demodulator circuits

More information

Maxim Integrated Products 1

Maxim Integrated Products 1 19-3265; Rev 0; 5/04 Dual-Output, Multimode General Description The high-performance, multimode, laser-diode drivers (LDDs) are designed for CD and DVD combination pickup heads. The drivers consist of

More information

Linear Output Magnetic Field Sensor AD22151

Linear Output Magnetic Field Sensor AD22151 Linear Output Magnetic Field Sensor AD5 FEATURES Adjustable Offset to Unipolar or Bipolar Operation Low Offset Drift over Temperature Range Gain Adjustable over Wide Range Low Gain Drift over Temperature

More information

8577B SM8577BS. Real-time Clock IC OVERVIEW PINOUT FEATURES PACKAGE DIMENSIONS ORDERING INFOMATION

8577B SM8577BS. Real-time Clock IC OVERVIEW PINOUT FEATURES PACKAGE DIMENSIONS ORDERING INFOMATION NIPPON PRECISION CIRCUITS INC. SM8577B Real-time Clock IC OVERVIEW PINOUT The SM8577B is a CMOS serial-interface type realtime clock IC that operates at 32.768 khz. It employs a 3-line serial interface

More information

L296 L296P HIGH CURRENT SWITCHING REGULATORS

L296 L296P HIGH CURRENT SWITCHING REGULATORS L296 L296P HIGH CURRENT SWITCHING REGULATORS 4 A OUTPUT CURRENT 5.1 V TO 40 V OUTPUT VOLTAGE RANGE 0 TO 100 % DUTY CYCLE RANGE PRECISE (±2 %) ON-CHIP REFERENCE SWITCHING FREQUENCY UP TO 200 KHz VERY HIGH

More information

Chapter 12. Common Switching Functional Blocks

Chapter 12. Common Switching Functional Blocks Chapter 12 Common Switching Functional Blocks Voltage Comparators In many applications, it is necessary to cause a digital switching action when an analog voltage rises above or drops below some value.

More information

ICS2402 MULTIPLIER AND ZERO DELAY BUFFER. Description. Features. Block Diagram DATASHEET

ICS2402 MULTIPLIER AND ZERO DELAY BUFFER. Description. Features. Block Diagram DATASHEET DATASHEET ICS2402 Description The ICS2402 is a high-performance Zero Delay Buffer (ZDB) which integrates IDT s proprietary analog/digital Phase-Locked Loop (PLL) techniques. The chip is part of IDT s ClockBlocks

More information

DATA SHEET. TDA1518BQ 24 W BTL or 2 x 12 watt stereo car radio power amplifier INTEGRATED CIRCUITS

DATA SHEET. TDA1518BQ 24 W BTL or 2 x 12 watt stereo car radio power amplifier INTEGRATED CIRCUITS INTEGRATED CIRCUITS DATA SHEET File under Integrated Circuits, IC01 July 1994 GENERAL DESCRIPTION The is an integrated class-b output amplifier in a 13-lead single-in-line (SIL) plastic power package.

More information

STEPPER MOTOR DRIVER VID66-08

STEPPER MOTOR DRIVER VID66-08 Page:1/6 STEPPER MOTOR DRIVER VID66-08 GENERAL DESCRIPTION The quad stepping motor driver VID66-06 is a monolithic CMOS device intended to be used as an interface circuit to ease the use of the stepper

More information

ICS571 LOW PHASE NOISE ZERO DELAY BUFFER. Description. Features. Block Diagram DATASHEET

ICS571 LOW PHASE NOISE ZERO DELAY BUFFER. Description. Features. Block Diagram DATASHEET DATASHEET ICS571 Description The ICS571 is a high speed, high output drive, low phase noise Zero Delay Buffer (ZDB) which integrates IDT s proprietary analog/digital Phase Locked Loop (PLL) techniques.

More information

SELF-OSCILLATING HALF-BRIDGE DRIVER

SELF-OSCILLATING HALF-BRIDGE DRIVER Data Sheet No. PD60029 revj I2155&(PbF) (NOTE: For new designs, we recommend I s new products I2153 and I21531) SELF-OSCILLATING HALF-BIDGE DIE Features Floating channel designed for bootstrap operation

More information

ICS514 LOCO PLL CLOCK GENERATOR. Description. Features. Block Diagram DATASHEET

ICS514 LOCO PLL CLOCK GENERATOR. Description. Features. Block Diagram DATASHEET DATASHEET ICS514 Description The ICS514 LOCO TM is the most cost effective way to generate a high-quality, high-frequency clock output from a 14.31818 MHz crystal or clock input. The name LOCO stands for

More information

Microprocessor Supervisory Circuits ADM690 ADM695

Microprocessor Supervisory Circuits ADM690 ADM695 a FEATURES Superior Upgrade for MAX690 MAX695 Specified Over Temperature Low Power Consumption (5 mw) Precision Voltage Monitor Reset Assertion Down to 1 V Low Switch On-Resistance 1.5 Normal, 20 in Backup

More information

DUAL UP-COUNTER High-Voltage Silicon-Gate CMOS

DUAL UP-COUNTER High-Voltage Silicon-Gate CMOS IW4B DUAL UP-COUNTER High- Silicon-Gate CMOS The IW4B Dual Binary Up-Counter coists two identical, internally synchronous 4-stage counters. The counter stages are D-type flip-flops having interchangeable

More information

3.3 VOLT ZERO DELAY, LOW SKEW BUFFER ICS Description. Features. Block Diagram DATASHEET

3.3 VOLT ZERO DELAY, LOW SKEW BUFFER ICS Description. Features. Block Diagram DATASHEET DATASHEET 3.3 VOLT ZERO DELAY, LOW SKEW BUFFER ICS671-03 Description The ICS671-03 is a low phase noise, high speed PLL based, 8 output, low skew zero delay buffer. Based on IDT s proprietary low jitter

More information

LM139/LM239/LM339/LM2901/LM3302 Low Power Low Offset Voltage Quad Comparators

LM139/LM239/LM339/LM2901/LM3302 Low Power Low Offset Voltage Quad Comparators Low Power Low Offset Voltage Quad Comparators General Description The LM139 series consists of four independent precision voltage comparators with an offset voltage specification as low as 2 mv max for

More information

DS1621 Digital Thermometer and Thermostat

DS1621 Digital Thermometer and Thermostat www.maxim-ic.com FEATURES Temperature measurements require no external components Measures temperatures from -55 C to +125 C in 0.5 C increments. Fahrenheit equivalent is -67 F to 257 F in 0.9 F increments

More information

MIC1555/1557. Features. General Description. Applications. Typical Application. IttyBitty RC Timer / Oscillator

MIC1555/1557. Features. General Description. Applications. Typical Application. IttyBitty RC Timer / Oscillator /7 IttyBitty RC Timer / Oscillator General Description The IttyBitty CMOS RC timer/oscillator and MIC7 IttyBitty CMOS RC oscillator are designed to provide rail-to-rail pulses for precise time delay or

More information

In-Rush Current Limit MOSFET Driver

In-Rush Current Limit MOSFET Driver In-Rush Current Limit MOSFET Driver Si975 FEATURES 2.9- to 3-V Input Operating Range Microprocessor RESET Integrated High-Side Driver for N-Channel MOSFET Programmable di/dt Current DESCRIPTION The Si975

More information

LM148/LM248/LM348 Quad 741 Op Amps

LM148/LM248/LM348 Quad 741 Op Amps Quad 741 Op Amps General Description The LM148 series is a true quad 741. It consists of four independent, high gain, internally compensated, low power operational amplifiers which have been designed to

More information

LM2889 TV Video Modulator

LM2889 TV Video Modulator LM2889 TV Video Modulator General Description The LM2889 is designed to interface audio and video signals to the antenna terminals of a TV receiver It consists of a sound subcarrier oscillator and FM modulator

More information

SG3524 REGULATING PULSE WIDTH MODULATORS

SG3524 REGULATING PULSE WIDTH MODULATORS SG3524 REGULATING PULSE WIDTH MODULATORS COMPLETE PWM POWER CONTROL CIR- CUITRY UNCOMMITTED OUTPUTS FOR SINGLE- ENDED OR PUSH PULL APPLICATIONS LOW STANDBY CURRENT 8mA TYPICAL OPERATION UP TO 300KHz 1%

More information

TOP VIEW 16 ON OUTPUT 3.3V/5V C3 SO

TOP VIEW 16 ON OUTPUT 3.3V/5V C3 SO 19-1254; Rev 0; 7/97 EALUATION KIT MANUAL FOLLOWS DATA SHEET 3.3/5 or Adjustable, General Description The integrate a step-up DC-DC converter with a linear regulator to provide step-up/down voltage conversion.

More information

Obsolete Product(s) - Obsolete Product(s)

Obsolete Product(s) - Obsolete Product(s) LED DISPLAY DRIVER FEATURES SUMMARY 3 1/2 DIGIT LED DRIVER (23 segments) CURRENT GENERATOR OUTPUTS (no resistors required) CONTINUOUS BRIGHTNESS CONTROL SERIAL DATA INPUT NO LOAD SIGNAL REQUIRED WIDE SUPPLY

More information

Pulse Width Modulation Amplifiers -PWM/RAMP ILIM/SHDN CURRENT LIMIT PWM. 100pF 28K OUTPUT DRIVERS OSC SHUTDOWN CONTROL

Pulse Width Modulation Amplifiers -PWM/RAMP ILIM/SHDN CURRENT LIMIT PWM. 100pF 28K OUTPUT DRIVERS OSC SHUTDOWN CONTROL Pulse Width Modulation Amplifiers SA SA FEATURE HIGH FREQUENCY SWITCHING khz WIDE SUPPLY RANGE -V A CONTINUOUS TO C CASE PROTECTION CIRCUITS ANALOG OR DIGITAL INPUTS SYNCHRONIZED OR EXTERNAL OSCILLATOR

More information

LM 358 Op Amp. If you have small signals and need a more useful reading we could amplify it using the op amp, this is commonly used in sensors.

LM 358 Op Amp. If you have small signals and need a more useful reading we could amplify it using the op amp, this is commonly used in sensors. LM 358 Op Amp S k i l l L e v e l : I n t e r m e d i a t e OVERVIEW The LM 358 is a duel single supply operational amplifier. As it is a single supply it eliminates the need for a duel power supply, thus

More information

MC74VHC1GT50. Noninverting Buffer / CMOS Logic Level Shifter. TTL Compatible Inputs

MC74VHC1GT50. Noninverting Buffer / CMOS Logic Level Shifter. TTL Compatible Inputs MC7CGT0 Noninverting Buffer / CMOS Logic Level Shifter TTL Compatible Inputs The MC7CGT0 is a single gate noninverting buffer fabricated with silicon gate CMOS technology. It achieves high speed operation

More information

High-Side Measurement CURRENT SHUNT MONITOR

High-Side Measurement CURRENT SHUNT MONITOR INA68 For most current data sheet and other product information, visit www.burr-brown.com High-Side Measurement CURRENT SHUNT MONITOR FEATURES COMPLETE UNIPOLAR HIGH-SIDE CURRENT MEASUREMENT CIRCUIT WIDE

More information

SEMICONDUCTOR FC Pin Switch-Mode LED Lamp Driver IC FC9921 TECHNICAL DATA

SEMICONDUCTOR FC Pin Switch-Mode LED Lamp Driver IC FC9921 TECHNICAL DATA SEMICONDUCTOR TECHNICAL DATA FC99 3-Pin Switch-Mode LED Lamp Driver IC Features Constant output current: 0mA Universal 85-65VAC operation Fixed off-time buck converter Internal 475V power MOSFET Applications

More information

LM1036 Dual DC Operated Tone/Volume/Balance Circuit

LM1036 Dual DC Operated Tone/Volume/Balance Circuit LM1036 Dual DC Operated Tone/Volume/Balance Circuit General Description The LM1036 is a DC controlled tone (bass/treble), volume and balance circuit for stereo applications in car radio, TV and audio systems.

More information

S-8130AA Series TEMPERATURE SWITCH IC WITH LATCH

S-8130AA Series TEMPERATURE SWITCH IC WITH LATCH www.sii-ic.com TEMPERATURE SWITCH IC WITH LATCH Seiko Instruments Inc., 2001-2010 Rev.3.0_00 The S-8130AA is a temperature switch with a latch function having a built-in semiconductor temperature sensor

More information