CLC1050, CLC2050, CLC4050 Low Power, 3V to 36V, Single/Dual/Quad Amplifiers

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1 Comlinear CLC1, CLC2, CLC4 Low Power, 3V to 36V, Single/Dual/Quad Amplifiers FEATURES n Unity gain stable n 1dB voltage gain n khz unity gain bandwidth n.ma supply current n 2nA input bias current n 2mV input offset voltage n 3V to 36V single supply voltage range n ±1.V to ±18V dual supply voltage range n Input common mode voltage range includes ground n V to V S -1.V output voltage swing n CLC2: improved replacement for industry standard LM38 n CLC4: Improved replacement for industry standard LM324 n CLC1: Pb-free SOT23- n CLC2: Pb-free SOIC-8 n CLC4: Pb-free SOIC-14 APPLICATIONS n Battery Charger n Active Filters n Transducer amplifiers n General purpose controllers n General purpose instruments Ordering Information General Description The COMLINEAR CLC1 (single), CLC2 (dual), and CLC4 (quad) are voltage feedback amplifiers that are internally frequency compensated to provide unity gain stability. At unity gain (G=1), these amplifiers offer khz of bandwidth. They consume only.ma of supply current over the entire power supply operating range. The CLC1, CLC2, and CLC4 are specifically designed to operate from single or dual supply voltages. The COMLINEAR CLC1, CLC2, and CLC4 offer a common mode voltage range that includes ground and a wide output voltage swing. The combination of low-power, high supply voltage range, and low supply current make these amplifiers well suited for many general purpose applications and as alternatives to several industry standard amplifiers on the market today. Typical Application - Voltage Controlled Oscillator (VCO) V CC Part Number Package Pb-Free RoHS Compliant Operating Temperature Range Packaging Method CLC1ISTX SOT23- Yes Yes -4 C to 8 C Reel CLC2ISO8X SOIC-8 Yes Yes -4 C to 8 C Reel CLC4ISO14X SOIC-14 Yes Yes -4 C to 8 C Reel Moisture sensitivity level for all parts is MSL-1. R 1k 1k R/2 k 1k.µF CLCx V/2 1k 1k CLCx 1k Output 1 Output 2 Comlinear CLC1, CLC2, CLC4 Low Power, 3V to 36V, Single/Dual/Quad Amplifiers Rev 1D Exar Corporation Kato Road, Fremont CA 9438, USA Tel Fax

2 CLC1 Pin Configuration CLC1 Pin Assignments IN -V S -IN CLC2 Pin Configuration OUT1 -IN1 IN1 -V S V S OUT CLC4 Pin Configuration OUT1 -IN1 IN1 VS IN2 -IN2 OUT V S OUT2 -IN2 IN2 OUT4 -IN4 IN4 -VS 1 IN3 -IN3 OUT3 Pin No. Pin Name Description 1 IN Positive input 2 -V S Negative supply 3 -IN Negative input 4 OUT Output V S Positive supply CLC2 Pin Configuration Pin No. Pin Name Description 1 OUT1 Output, channel 1 2 -IN1 Negative input, channel 1 3 IN1 Positive input, channel 1 4 -V S Negative supply IN2 Positive input, channel 2 6 -IN2 Negative input, channel 2 7 OUT2 Output, channel 2 8 V S Positive supply CLC4 Pin Configuration Pin No. Pin Name Description 1 OUT1 Output, channel 1 2 -IN1 Negative input, channel 1 3 IN1 Positive input, channel 1 4 VS Positive supply IN2 Positive input, channel 2 6 -IN2 Negative input, channel 2 7 OUT2 Output, channel 2 8 OUT3 Output, channel 3 9 -IN3 Negative input, channel 3 1 IN3 Positive input, channel V S Negative supply 12 IN4 Positive input, channel IN4 Negative input, channel 4 14 OUT4 Output, channel 4 Comlinear CLC1, CLC2, CLC4 Low Power, 3V to 36V, Single/Dual/Quad Amplifiers Rev 1D Exar Corporation 2/17 Rev 1D

3 Absolute Maximum Ratings The safety of the device is not guaranteed when it is operated above the Absolute Maximum Ratings. The device should not be operated at these absolute limits. Adhere to the Recommended Operating Conditions for proper device function. The information contained in the Electrical Characteristics tables and Typical Performance plots reflect the operating conditions noted on the tables and plots. Parameter Min Max Unit Supply Voltage 4 V Differential Input Voltage 4 V Input Voltage V Power Dissipation (T A = 2 C) - SOIC-8 mw Power Dissipation (T A = 2 C) - SOIC-14 8 mw Reliability Information Parameter Min Typ Max Unit Junction Temperature 1 C Storage Temperature Range -6 1 C Lead Temperature (Soldering, 1s) 26 C Package Thermal Resistance SOT C/W SOIC-8 1 C/W SOIC C/W Notes: Package thermal resistance (q JA ), JDEC standard, multi-layer test boards, still air. Recommended Operating Conditions Parameter Min Typ Max Unit Operating Temperature Range -4 8 C Supply Voltage Range 3 (±1.) 36 (±18) V Comlinear CLC1, CLC2, CLC4 Low Power, 3V to 36V, Single/Dual/Quad Amplifiers Rev 1D Exar Corporation 3/17 Rev 1D

4 Electrical Characteristics T A = 2 C (if bold, T A = -4 to 8 C), V s = V, -V s = GND, R f = R g =2kΩ, R L = 2kΩ to V S /2, G = 2; unless otherwise noted. Symbol Parameter Conditions Min Typ Max Units Frequency Domain Response UGBW SS BW SS BW LS Unity Gain Bandwidth -3dB Bandwidth Time Domain Response t R, t F Large Signal Bandwidth Rise and Fall Time G = 1, V OUT =.2V pp, V S = V 33 khz G = 1, V OUT =.2V pp, V S = 3V khz G = 2, V OUT =.2V pp, V S = V 3 khz G = 1, V OUT =.2V pp, V S = 3V 422 khz G = 2, V OUT = 1V pp, V S = V 17 khz G = 2, V OUT = 2V pp, V S = 3V 76 khz V OUT = 1V step; (1% to 9%), V S = V 4 µs V OUT = 2V step; (1% to 9%), V S = 3V.6 µs OS Overshoot V OUT =.2V step 1 % SR Slew Rate Distortion/Noise Response THD e n Total Harmonic Distortion Input Voltage Noise 1V step, V S = V 2 V/ms 4V step, V S = 3V 28 V/ms V OUT = 2V pp, f = 1kHz, G = 2dB, C L = 1pF, V S = 3V.1 % > 1kHz, V S = V 4 nv/ Hz > 1kHz, V S = 3V 4 nv/ Hz X TALK Crosstalk Channel-to-channel, 1kHz to 2kHz 12 db DC Performance V IO Input Offset Voltage (1) V OUT = 1.4V, R S = Ω, V S = V to 3V 2 mv 7 mv dv IO Average Drift 7 µv/ C I b Input Bias Current (1) V CM = V I OS Input Offset Current (1) V CM = V PSRR Power Supply Rejection Ratio (1) DC, V S = V to 3V A OL Open-Loop Gain (1) V S = 1V, R L = 2kΩ, V OUT = 1V to 11V I S Input Characteristics 2 1 na 2 na 3 na 1 na 7 1 db 6 db 8 1 db 8 db Supply Current, CLC1 (1) R L =, V S = V.4 1. ma R L =, V S = 3V.6 1. ma Supply Current, CLC2 (1) R L =, V S = V. 1.2 ma R L =, V S = 3V.7 2. ma Supply Current, CLC4 (1) R L =, V S = V ma R L =, V S = 3V ma CMIR Common Mode Input Range (1,3) V S = 3V CMRR Common Mode Rejection Ratio (1) DC, V CM = V to (V S - 1.V) Output Characteristics V OH Output Voltage Swing, High (1) V S = 3V, R L = 2kΩ V S = 3V, R L = 1kΩ V S db 6 db 26 V 26 V V 27 V V Comlinear CLC1, CLC2, CLC4 Low Power, 3V to 36V, Single/Dual/Quad Amplifiers Rev 1D Exar Corporation 4/17 Rev 1D

5 Electrical Characteristics continued T A = 2 C (if bold, T A = -4 to 8 C), V s = V, -V s = GND, R f = R g =2kΩ, R L = 2kΩ to V S /2, G = 2; unless otherwise noted. Symbol Parameter Conditions Min Typ Max Units V OL Output Voltage Swing, Low (1) V S = V, R L = 1kΩ I SOURCE Output Current, Sourcing (1) V IN = 1V, V IN- = V, V S = 1V, V OUT = 2V I SINK Output Current, Sinking (1) V IN = V, V IN- = 1V, V S = 1V, V OUT = 2V 2 mv 3 mv 2 4 ma ma V IN = V, V IN- = 1V, V S = 1V, V OUT =.2V 12 μa I SC Short Circuit Output Current (1) V S = 1V 4 6 ma Notes: 1. 1% tested at 2 C. (Limits over the full temperature range are guaranteed by design.) 2. The input common mode voltage of either input signal voltage should be kept >.3V at 2 C. The upper end of the common-mode voltage range is V S - 1.V at 2 C, but either or both inputs can go to 36V without damages, independent of the magnitude of V S. Comlinear CLC1, CLC2, CLC4 Low Power, 3V to 36V, Single/Dual/Quad Amplifiers Rev 1D Exar Corporation /17 Rev 1D

6 Typical Performance Characteristics T A = 2 C, V s = 3V, -V s = GND, R f = R g =2kΩ, R L = 2kΩ, G = 2; unless otherwise noted. Non-Inverting Frequency Response Inverting Frequency Response Frequency Response vs. C L Frequency Response vs. V OUT V OUT =.2V pp C L = 1nF R s = Ω C L = nf R s = Ω G = 1 R f = G = 2 G = G = C L = 1nF R s = Ω C L = 1pF R s = Ω V OUT =.2V pp Vout = 2Vpp Vout = 4Vpp V OUT =.2V pp Frequency Response vs. R L V OUT =.2V pp -3dB Bandwidth vs. V OUT -3dB Bandwidth (KHz) R L = 1K R L = 2K R L = K R L = 1K G = -1 G = -2 G = - G = V OUT (V PP ) Comlinear CLC1, CLC2, CLC4 Low Power, 3V to 36V, Single/Dual/Quad Amplifiers Rev 1D Exar Corporation 6/17 Rev 1D

7 Typical Performance Characteristics T A = 2 C, V s = 3V, -V s = GND, R f = R g =2kΩ, R L = 2kΩ, G = 2; unless otherwise noted. Non-Inverting Frequency Response at V S = V Inverting Frequency Response at V S = V Frequency Response vs. C L at V S = V Frequency Response vs. V OUT at V S = V V OUT =.2V pp C L = 1nF R s = Ω C L = nf R s = Ω G = 1 R f = G = 2 G = G = C L = 1nF R s = Ω C L = 1pF R s = Ω V OUT =.2V pp Vout = 1Vpp Vout = 2Vpp V OUT =.2V pp Frequency Response vs. R L at V S = V V OUT =.2V pp R L = 1K R L = 2K R L = K R L = 1K -3dB Bandwidth vs. V OUT at V S = V -3dB Bandwidth (KHz) G = -1 G = -2 G = - G = V OUT (V PP ) Comlinear CLC1, CLC2, CLC4 Low Power, 3V to 36V, Single/Dual/Quad Amplifiers Rev 1D Exar Corporation 7/17 Rev 1D

8 Typical Performance Characteristics - Continued T A = 2 C, V s = 3V, -V s = GND, R f = R g =2kΩ, R L = 2kΩ, G = 2; unless otherwise noted. Small Signal Pulse Response Large Signal Pulse Response Output Voltage (V) Time (us) Small Signal Pulse Response at V S = V Output Voltage (V) Time (us) Supply Current vs. Supply Voltage Supply Current (ma) V OUT =.2V pp CLC4 CLC2 CLC Supply Voltage (V) Output Voltage (V) Time (us) Large Signal Pulse Response at V S = V Output Voltage (V) Time (us) Input Voltage Range vs. Power Supply Input Voltage (/-Vdc) 1 1 NEGATIVE POSITIVE 1 1 Power Supply Voltage (/-Vdc) Comlinear CLC1, CLC2, CLC4 Low Power, 3V to 36V, Single/Dual/Quad Amplifiers Rev 1D Exar Corporation 8/17 Rev 1D

9 Typical Performance Characteristics - Continued T A = 2 C, V s = 3V, -V s = GND, R f = R g =2kΩ, R L = 2kΩ, G = 2; unless otherwise noted. Voltage Gain vs. Supply Voltage Input Current vs. Temperature Voltage Gain (db) 12 R L =2K 1 9 R L =2K 7 V OUT =.2V pp Power Supply Voltage (V) Functional Block Diagram V CC 6µA 4µA Q2 Q3 Cc Q1 Q4 Inputs Q1 Q8 Q9 Input Current (na) Temperature ( C) 1µA Q Q6 Q7 Rsc Output Q11 Q13 Q12 µa Comlinear CLC1, CLC2, CLC4 Low Power, 3V to 36V, Single/Dual/Quad Amplifiers Rev 1D Exar Corporation 9/17 Rev 1D

10 Application Information Basic Operation Figures 1, 2, and 3 illustrate typical circuit configurations for non-inverting, inverting, and unity gain topologies for dual supply applications. They show the recommended bypass capacitor values and overall closed loop gain equations. Input Input Input R g - V s -V s 6.8μF.1μF.1μF 6.8μF R f R L Output G = 1 (R f/r g) Figure 1. Typical Non-Inverting Gain Circuit R 1 R g - Figure 2. Typical Inverting Gain Circuit - V s -V s V s -V s 6.8μF.1μF.1μF 6.8μF 6.8uF.1uF.1uF 6.8uF R f G = 1 R L G = - (R f/r g) Output For optimum input offset voltage set R 1 = R f R g R L Figure 3. Unity Gain Circuit Output Power Dissipation Power dissipation should not be a factor when operating under the stated 2k ohm load condition. However, applications with low impedance, DC coupled loads should be analyzed to ensure that maximum allowed junction temperature is not exceeded. Guidelines listed below can be used to verify that the particular application will not cause the device to operate beyond it s intended operating range. Maximum power levels are set by the absolute maximum junction rating of 1 C. To calculate the junction temperature, the package thermal resistance value Theta JA (Ө JA ) is used along with the total die power dissipation. T Junction = T Ambient (Ө JA P D ) Where T Ambient is the temperature of the working environment. In order to determine P D, the power dissipated in the load needs to be subtracted from the total power delivered by the supplies. P D = P supply - P load Supply power is calculated by the standard power equation. P supply = V supply I RMS supply V supply = V S - V S- Power delivered to a purely resistive load is: P load = ((V LOAD ) RMS 2 )/Rloadeff The effective load resistor (Rload eff ) will need to include the effect of the feedback network. For instance, Rload eff in figure 3 would be calculated as: R L (R f R g ) These measurements are basic and are relatively easy to perform with standard lab equipment. For design purposes however, prior knowledge of actual signal levels and load impedance is needed to determine the dissipated power. Here, P D can be found from P D = P Quiescent P Dynamic - P Load Quiescent power can be derived from the specified I S values along with known supply voltage, V Supply. Load power can be calculated as above with the desired signal amplitudes using: Comlinear CLC1, CLC2, CLC4 Low Power, 3V to 36V, Single/Dual/Quad Amplifiers Rev 1D Exar Corporation 1/17 Rev 1D

11 (V LOAD ) RMS = V PEAK / 2 ( I LOAD ) RMS = ( V LOAD ) RMS / Rload eff The dynamic power is focused primarily within the output stage driving the load. This value can be calculated as: P DYNAMIC = (V S - V LOAD ) RMS ( I LOAD ) RMS Assuming the load is referenced in the middle of the power rails or V supply /2. Figure 4 shows the maximum safe power dissipation in the package vs. the ambient temperature for the packages available. Maximum Power Dissipation (W) SOT23-6 SOT23- SOIC Ambient Temperature ( C) Figure 4. Maximum Power Derating Driving Capacitive Loads Increased phase delay at the output due to capacitive loading can cause ringing, peaking in the frequency response, and possible unstable behavior. Use a series resistance, R S, between the amplifier and the load to help improve stability and settling performance. Refer to Figure. Input R g - R f R s C L R L Output Figure. Addition of R S for Driving Capacitive Loads Table 1 provides the recommended R S for various capacitive loads. The recommended R S values result in <=1dB peaking in the frequency response. The Frequency Response vs. C L plot, on page 6, illustrates the response of the CLCx. C L (pf) R S (Ω) -3dB BW (khz) 1nF 48 nf 39 1nF Table 1: Recommended R S vs. C L For a given load capacitance, adjust R S to optimize the tradeoff between settling time and bandwidth. In general, reducing R S will increase bandwidth at the expense of additional overshoot and ringing. Overdrive Recovery An overdrive condition is defined as the point when either one of the inputs or the output exceed their specified voltage range. Overdrive recovery is the time needed for the amplifier to return to its normal or linear operating point. The recovery time varies, based on whether the input or output is overdriven and by how much the range is exceeded. The CLCx will typically recover in less than 3ns from an overdrive condition. Figure 6 shows the CLC1 in an overdriven condition. Input Voltage (V) Input Output Time (us) V IN = 1.2V pp G = Figure 6. Overdrive Recovery Output Voltage (V) Comlinear CLC1, CLC2, CLC4 Low Power, 3V to 36V, Single/Dual/Quad Amplifiers Rev 1D Exar Corporation 11/17 Rev 1D

12 Layout Considerations General layout and supply bypassing play major roles in high frequency performance. Exar has evaluation boards to use as a guide for high frequency layout and as an aid in device testing and characterization. Follow the steps below as a basis for high frequency layout: Include 6.8µF and.1µf ceramic capacitors for power supply decoupling Place the 6.8µF capacitor within.7 inches of the power pin Place the.1µf capacitor within.1 inches of the power pin Remove the ground plane under and around the part, especially near the input and output pins to reduce parasitic capacitance Minimize all trace lengths to reduce series inductances Refer to the evaluation board layouts below for more information. Evaluation Board Information The following evaluation boards are available to aid in the testing and layout of these devices: Evaluation Board # CEB2 CEB6 CEB18 CLC1 CLC2 CLC4 Evaluation Board Schematics Products Evaluation board schematics and layouts are shown in Figures These evaluation boards are built for dual- supply operation. Follow these steps to use the board in a single-supply application: 1. Short -Vs to ground. 2. Use C3 and C4, if the -V S pin of the amplifier is not directly connected to the ground plane. Figure 7. CEB2 Schematic Figure 8. CEB2 Top View Comlinear CLC1, CLC2, CLC4 Low Power, 3V to 36V, Single/Dual/Quad Amplifiers Rev 1D Exar Corporation 12/17 Rev 1D

13 Figure 9. CEB2 Bottom View Figure 1. CEB6 Schematic Figure 11. CEB6 Top View Figure 12. CEB6 Bottom View Comlinear CLC1, CLC2, CLC4 Low Power, 3V to 36V, Single/Dual/Quad Amplifiers Rev 1D Exar Corporation 13/17 Rev 1D

14 AC Line Figure 13. CEB18 Schematic SMPS Opto Isolator Current Sense R1 R2 R3 Typical Applications AZ431 R4 V CC CLCx R6 GND R Figure 16. Battery Charger Figure 14 CEB18 Top View Figure 1. CEB18 Bottom View V CC CLCx GND R7 R8 Battery Pack Comlinear CLC1, CLC2, CLC4 Low Power, 3V to 36V, Single/Dual/Quad Amplifiers Rev 1D Exar Corporation 14/17 Rev 1D

15 V cc V IN V 1 V 2 V 3 V 4 C1.1µF AC R2 1K R3 91K R1 91K CLCx V CC R L Figure 17. Power Amplifier R1 1k R2 1k R3 1k R4 1k R 1k CLCx R6 1k V O Figure 18. DC Summing Amplifier R1 1k R2 1M C O C IN CLCx V O R B 6.2k R L 1k R3 1M R4 V CC 1k C2 1µF R 1k V O A V = 1 R2/R1 A V = 11 (As shown) Figure 19. AC-Coupled Non-Inverting Amplifier 2V R3 2k R4 3k CLCx 2V I1 1mA R1 2k Figure 2. Fixed Current Sources V cc.1µf R3 1k R4 1k R1 1M R2 1k CLCx R 1k I2 R2 V O Figure 21. Pulse Generator C1.1µF R1 R2 V IN 16k 16k CLCx C2.1µF V O fo f O =1kHz Q=1 A V =2 V O R3 1k R4 1k Figure 22. DC-Coupled Low-Pass Active Filter Comlinear CLC1, CLC2, CLC4 Low Power, 3V to 36V, Single/Dual/Quad Amplifiers Rev 1D Exar Corporation 1/17 Rev 1D

16 Mechanical Dimensions SOT23- Package SOIC-8 Package Comlinear CLC1, CLC2, CLC4 Low Power, 3V to 36V, Single/Dual/Quad Amplifiers Rev 1D Exar Corporation 16/17 Rev 1D

17 Mechanical Dimensions continued SOIC-14 Package For Further Assistance: Exar Corporation Headquarters and Sales Offices 4872 Kato Road Tel.: 1 (1) Fremont, CA USA Fax: 1 (1) NOTICE EXAR Corporation reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any circuits described herein, conveys no license under any patent or other right, and makes no representation that the circuits are free of patent infringement. Charts and schedules contained here in are only for illustration purposes and may vary depending upon a user s specific application. While the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies. EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks; (c) potential liability of EXAR Corporation is adequately protected under the circumstances. Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited. Comlinear CLC1, CLC2, CLC4 Low Power, 3V to 36V, Single/Dual/Quad Amplifiers Rev 1D Exar Corporation 17/17 Rev 1D