CLC1006 Single, 500MHz Voltage Feedback Amplifier

Transcription

1 Comlinear CLC6 Single, 5MHz Voltage Feedback Amplifier FEATURES n 5MHz db bandwidth at G= n,4v/μs slew rate n.%/.5 diff. gain/phase error n MHz large signal bandwidth n 5.5mA supply current n 5nV/ Hz input voltage noise n ma output current n Stable for gains n Fully specified at 5V and ±5V supplies n CLC6: Pb-free SOT and SOIC8 APPLICATIONS n Video line drivers n Imaging applications n Professional cameras n Differential line receivers n Photodiode preamps n Radar or communication receivers General Description The COMLINEAR CLC6 is a high-performance, voltage feedback amplifier that offers bandwidth and slew rate usually found in current feedback amplifiers. The CLC6 provides 5MHz bandwidth and,4v/μs slew rate exceeding the requirements of standard-definition television and other multimedia applications. The COMLINEAR CLC6 high-performance amplifier also provides ample output current to drive multiple video loads. The COMLINEAR CLC6 is designed to operate from ±5V or +5V supplies. It consumes only 5.5mA of supply current. The combination of high-speed, excellent video performance, and ns settling time make the CLC6 well suited for use in many general purpose, high-speed applications including standard definition video and imaging applications. Typical Application - Driving Dual Video Loads Comlinear CLC6 Single, 5MHz Voltage Feedback Amplifier Rev D Ordering Information Part Number Package Pb-Free RoHS Compliant Operating Temperature Range Packaging Method CLC6IST5X SOT Yes Yes C to +85 C Reel CLC6ISO8X SOIC-8 Yes Yes C to +85 C Reel Moisture sensitivity level for all parts is MSL-. Exar Corporation Kato Road, Fremont CA 9458, USA Tel Fax

2 SOT Pin Configuration SOT Pin Assignments OUT -V S +IN SOIC Pin Configuration NC -IN +IN -V S 4 5 +V S -IN 8 NC 7 +V S 6 OUT NC Pin No. Pin Name Description OUT Output -V S Negative supply +IN Positive input 4 -IN Negative input 5 +V S Positive supply SOIC Pin Assignments Pin No. Pin Name Description NC No connect -IN Negative input, channel +IN Positive input, channel 4 -V S Negative supply 5 NC No connect 6 OUT Output 7 +V S Positive supply 8 NC No connect Comlinear CLC6 Single, 5MHz Voltage Feedback Amplifier Rev D 7 Exar Corporation /6 Rev D

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 Input Voltage Range -V s -.5V +V s +.5V V Continuous Output Current ma Reliability Information Parameter Min Typ Max Unit Junction Temperature 5 C Storage Temperature Range 5 5 C Lead Temperature (Soldering, s) 6 C Package Thermal Resistance 5-Lead SOT C/W 8-Lead SOIC C/W Notes: Package thermal resistance (q JA ), JDEC standard, multi-layer test boards, still air. ESD Protection Product Human Body Model (HBM) Charged Device Model (CDM) Recommended Operating Conditions SOT Parameter Min Typ Max Unit Operating Temperature Range +85 C Supply Voltage Range 4.5 V kv kv Comlinear CLC6 Single, 5MHz Voltage Feedback Amplifier Rev D 7 Exar Corporation /6 Rev D

4 Electrical Characteristics at +5V T A = 5 C, V s = +5V, R f = 5Ω, R L = 5Ω to V S /, G = ; unless otherwise noted. Symbol Parameter Conditions Min Typ Max Units Frequency Domain Response BW SS db Bandwidth G = +, V OUT =.V pp 4 MHz BW LS Large Signal Bandwidth G = +, V OUT = V pp 5 MHz BW.dBSS.dB Gain Flatness G = +, V OUT =.V pp 5 MHz BW.dBLS.dB Gain Flatness G = +, V OUT = V pp 5 MHz Time Domain Response t R, t F Rise and Fall Time V OUT = V step; (% to 9%).4 ns t S Settling Time to.% V OUT = V step ns OS Overshoot V OUT =.V step % SR Slew Rate V step 65 V/µs Distortion/Noise Response HD nd Harmonic Distortion V pp, 5MHz dbc HD rd Harmonic Distortion V pp, 5MHz 7 dbc THD Total Harmonic Distortion V pp, 5MHz 9 db IP Third-Order Intercept V pp, MHz dbm SFDR Spurious-Free Dynamic Range V pp, 5MHz 6 dbc D G Differential Gain NTSC (.58MHz), AC-coupled, R L = 5Ω. % D P Differential Phase NTSC (.58MHz), AC-coupled, R L = 5Ω. e n Input Voltage Noise > MHz 5 nv/ Hz i n Input Current Noise > MHz pa/ Hz DC Performance V IO Input Offset Voltage mv dv IO Average Drift. µv/ C I bn Input Bias Current ±. µa di b Average Drift 7.5 na/ C PSRR Power Supply Rejection Ratio DC 6 db A OL Open-Loop Gain 55 db I S Supply Current 5. ma Input Characteristics R IN Input Resistance Non-inverting 4.5 MΩ C IN Input Capacitance. pf CMIR Common Mode Input Range to 4 V CMRR Common Mode Rejection Ratio DC 5 db Output Characteristics R O Output Resistance Closed Loop, DC. Ω V OUT Output Voltage Swing R L = 5Ω to 4 V I OUT Output Current ± ma Comlinear CLC6 Single, 5MHz Voltage Feedback Amplifier Rev D 7 Exar Corporation 4/6 Rev D

5 Electrical Characteristics at ±5V T A = 5 C, V s = ±5V, R f = 5Ω, R L = 5Ω to GND, G = ; unless otherwise noted. Symbol Parameter Conditions Min Typ Max Units Frequency Domain Response BW SS db Bandwidth G = +, V OUT =.V pp 5 MHz BW LS Large Signal Bandwidth G = +, V OUT = V pp MHz BW.dBSS.dB Gain Flatness G = +, V OUT =.V pp 5 MHz BW.dBLS.dB Gain Flatness G = +, V OUT = V pp MHz Time Domain Response t R, t F Rise and Fall Time V OUT = V step; (% to 9%).4 ns t S Settling Time to.% V OUT = V step ns OS Overshoot V OUT =.V step % SR Slew Rate V step 4 V/µs Distortion/Noise Response HD nd Harmonic Distortion V pp, 5MHz 8 dbc HD rd Harmonic Distortion V pp, 5MHz dbc THD Total Harmonic Distortion V pp, 5MHz db IP Third-Order Intercept V pp, MHz dbm SFDR Spurious-Free Dynamic Range V pp, 5MHz 6 dbc D G Differential Gain NTSC (.58MHz), AC-coupled, R L = 5Ω. % D P Differential Phase NTSC (.58MHz), AC-coupled, R L = 5Ω.5 e n Input Voltage Noise > MHz 5 nv/ Hz i ni Input Current Noise > MHz pa/ Hz DC Performance V IO Input Offset Voltage () - mv dv IO Average Drift. µv/ C I b Input Bias Current () ±. µa di b Average Drift 7.5 na/ C PSRR Power Supply Rejection Ratio () DC 4 75 db A OL Open-Loop Gain 6 db I S Supply Current () 5.5 ma Input Characteristics R IN Input Resistance Non-inverting 4.5 MΩ C IN Input Capacitance. pf CMIR Common Mode Input Range ±.8 V CMRR Common Mode Rejection Ratio () DC 4 65 db Output Characteristics R O Output Resistance Closed Loop, DC. Ω V OUT Output Voltage Swing R L = 5Ω () ±. ±.6 V I OUT Output Current ± ma Comlinear CLC6 Single, 5MHz Voltage Feedback Amplifier Rev D Notes:. % tested at 5 C 7 Exar Corporation 5/6 Rev D

6 Typical Performance Characteristics T A = 5 C, V s = ±5V, R f = 5Ω, R L = 5Ω to GND, G = ; unless otherwise noted. Non-Inverting Frequency Response Inverting Frequency Response Frequency Response vs. C L Frequency Response vs. V OUT V OUT =.V pp G = G = 5 G =. C L = pf R s =.Ω C L = 5pF R s = 6Ω C L = pf R s = Ω C L = 5pF R s = 5Ω C L = pf V OUT =.V pp R s = Ω. V OUT = V pp V OUT = V pp V OUT = 4V pp - -7 V OUT =.V pp. Frequency Response vs. R L - V OUT =.V pp G = - G = G = G = - R L = 5Ω. Frequency Response vs. Temperature - + 5degC R L = kω R L = Ω - 4degC + 85degC R L = 5Ω R L = 5Ω Comlinear CLC6 Single, 5MHz Voltage Feedback Amplifier Rev D V OUT =.V pp Exar Corporation 6/6 Rev D

7 Typical Performance Characteristics T A = 5 C, V s = ±5V, R f = 5Ω, R L = 5Ω to GND, G = ; unless otherwise noted. Non-Inverting Frequency Response at V S = 5V Inverting Frequency Response at V S = 5V Frequency Response vs. C L at V S = 5V Frequency Response vs. V OUT at V S = 5V V OUT =.V pp G = G = 5 G =. C L = pf R s =.Ω C L = 5pF R s = 6Ω C L = pf R s = Ω C L = 5pF R s = 5Ω C L = pf V OUT =.V pp R s = Ω. V OUT = V pp V OUT = V pp V OUT = 4V pp - -7 V OUT =.V pp G = - G = G = G = -. Frequency Response vs. R L at V S = 5V - V OUT =.V pp R L = 5Ω. R L = kω R L = Ω R L = 5Ω R L = 5Ω Frequency Response vs. Temperature at V S = 5V - + 5degC - 4degC + 85degC Comlinear CLC6 Single, 5MHz Voltage Feedback Amplifier Rev D V OUT =.V pp Exar Corporation 7/6 Rev D

8 Typical Performance Characteristics - Continued T A = 5 C, V s = ±5V, R f = 5Ω, R L = 5Ω to GND, G = ; unless otherwise noted. Gain Flatness Gain Flatness at V S = 5V db Bandwidth vs. V OUT db Bandwidth (MHz) V OUT = V pp Closed Loop Output Impedance vs. Frequency Output Resistance (Ω) V S = ±5.V V OUT (V PP ). k k M M M G Frequency (Hz) V OUT = V pp db Bandwidth vs. V OUT at V S = 5V db Bandwidth (MHz) Input Voltage Noise Input Voltage Noise (nv/ Hz) V OUT (V PP ).... Comlinear CLC6 Single, 5MHz Voltage Feedback Amplifier Rev D 7 Exar Corporation 8/6 Rev D

9 Typical Performance Characteristics - Continued T A = 5 C, V s = ±5V, R f = 5Ω, R L = 5Ω to GND, G = ; unless otherwise noted. nd Harmonic Distortion vs. R L rd Harmonic Distortion vs. R L Distortion (dbc) R L = 5Ω -7 R L = 5Ω -8-9 V OUT = V pp nd Harmonic Distortion vs. V OUT Distortion (dbc) MHz -7 5MHz -8 MHz Output Amplitude (V pp ) CMRR vs. Frequency V S = ±5.V - Distortion (dbc) R L = 5Ω -7 R L = 5Ω -8-9 V OUT = V pp rd Harmonic Distortion vs. V OUT Distortion (dbc) MHz -7 5MHz -8 MHz Output Amplitude (V pp ) PSRR vs. Frequency - Comlinear CLC6 Single, 5MHz Voltage Feedback Amplifier Rev D CMRR (db) PSRR (db) k k M M M Frequency (Hz) -7 k k M M M Frequency (Hz) 7 Exar Corporation 9/6 Rev D

10 Typical Performance Characteristics - Continued T A = 5 C, V s = ±5V, R f = 5Ω, R L = 5Ω to GND, G = ; unless otherwise noted. Small Signal Pulse Response Small Signal Pulse Response at V S = 5V Voltage (V) Large Signal Pulse Response Voltage (V) Differential Gain & Phase AC Coupled Output Diff Gain (%) and Diff Phase ( ) Time (ns) R L = 5Ω AC coupled Time (ns) DP Input Voltage (V) DG Voltage (V) Time (ns) Large Signal Pulse Response at V S = 5V Voltage (V) Diff Gain (%) and Diff Phase ( ) Time (ns) Differential Gain & Phase DC Coupled Output R L = 5Ω DC coupled DP Input Voltage (V) DG Comlinear CLC6 Single, 5MHz Voltage Feedback Amplifier Rev D 7 Exar Corporation /6 Rev D

11 Typical Performance Characteristics - Continued T A = 5 C, V s = ±5V, R f = 5Ω, R L = 5Ω to GND, G = ; unless otherwise noted. Differential Gain & Phase AC Coupled Output at V S = ±.5V Differential Gain & Phase DC Coupled at V S = ±.5V Diff Gain (%) and Diff Phase ( ) R L = 5Ω AC coupled Input Voltage (V) DP DG Diff Gain (%) and Diff Phase ( ) R L = 5Ω DC coupled DP Input Voltage (V) DG Comlinear CLC6 Single, 5MHz Voltage Feedback Amplifier Rev D 7 Exar Corporation /6 Rev D

12 Application Information Basic Operation Figures and 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 R g + - +V s -V s 6.8μF.μF.μF 6.8μF R f Output G = + (R f/r g) Figure. Typical Non-Inverting Gain Circuit R R g + Power Dissipation - +V s -V s 6.8μF.μF.μF 6.8μF R L Figure. Typical Inverting Gain Circuit Power dissipation should not be a factor when operating under the stated 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. R f R L G = - (R f/r g) Output For optimum input offset voltage set R = R f R g Maximum power levels are set by the absolute maximum junction rating of 5 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 )/Rloadeff The effective load resistor (Rload eff ) will need to include the effect of the feedback network. For instance, Rload eff in figure 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: (V LOAD ) RMS = V PEAK / ( 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 /. Figure shows the maximum safe power dissipation in the package vs. the ambient temperature for the packages available. Comlinear CLC6 Single, 5MHz Voltage Feedback Amplifier Rev D 7 Exar Corporation /6 Rev D

13 Maximum Power Dissipation (W) SOT SOIC Ambient Temperature ( C) Figure. 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 4. Input R g + - R f R s C L R L Output Figure 4. Addition of R S for Driving Capacitive Loads Table provides the recommended R S for various capacitive loads. The recommended R S values result in <=db peaking in the frequency response. The Frequency Response vs. C L plots, on page 7, illustrates the response of the CLC6. C L (pf) R S (Ω) db BW (MHz) 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 CLC6 will typically recover in less than 5ns from an overdrive condition. Figure 5 shows the CLC6 in an overdriven condition. Input Voltage (V) - Input Layout Considerations Output Time (ns) V IN =.5V pp G = 5 Figure 5. Overdrive Recovery 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 aid in device testing and characterization. Follow the steps below as a basis for high frequency layout: Include 6.8µF and.µf ceramic capacitors for power supply decoupling Output Voltage (V) Comlinear CLC6 Single, 5MHz Voltage Feedback Amplifier Rev D Place the 6.8µF capacitor within.75 inches of the power pin Place the.µf capacitor within. 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 Table : 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, Minimize all trace lengths to reduce series inductances Refer to the evaluation board layouts below for more information. 7 Exar Corporation /6 Rev D

14 Evaluation Board Information The following evaluation boards are available to aid in the testing and layout of these devices: Evaluation Board # CEB CEB Evaluation Board Schematics Products CLC6IST5X CLC6ISO8X Evaluation board schematics and layouts are shown in Figures 9-. These evaluation boards are built for dual- supply operation. Follow these steps to use the board in a single-supply application:. Short -Vs to ground.. Use C and C4, if the -V S pin of the amplifier is not directly connected to the ground plane. Figure. CEB Top View Figure. CEB Bottom View Comlinear CLC6 Single, 5MHz Voltage Feedback Amplifier Rev D Figure 9. CEB Schematic 7 Exar Corporation 4/6 Rev D

15 Figure. CEB Schematic Figure 4. CEB Bottom View Comlinear CLC6 Single, 5MHz Voltage Feedback Amplifier Rev D Figure. CEB Top View 7 Exar Corporation 5/6 Rev D

16 Mechanical Dimensions SOT Package SOIC-8 Package Comlinear CLC6 Single, 5MHz Voltage Feedback Amplifier Rev D For Further Assistance: Exar Corporation Headquarters and Sales Offices 487 Kato Road Tel.: + (5) Fremont, CA USA Fax: + (5) 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. 7 Exar Corporation 6/6 Rev D