LM7171

LM7171 Very High Speed, High Output Current, Voltage Feedback Amplifier May 1999 LM7171 Very High Speed, High Output Current, Voltage Feedback Amplifier General Description The LM7171 is a high speed voltage feedback amplifier that has the slewing characteristic of a current feedback amplifier; yet it can be used in all traditional voltage feedback amplifier configurations. The LM7171 is stable for gains as low as +2 or −1. It provides a very high slew rate at 4100V/µs and a wide unity-gain bandwidth of 200 MHz while consuming only 6.5 mA of supply current. It is ideal for video and high speed signal processing applications such as HDSL and pulse amplifiers. With 100 mA output current, the LM7171 can be used for video distribution, as a transformer driver or as a laser diode driver. Operation on ± 15V power supplies allows for large signal swings and provides greater dynamic range and signal-to-noise ratio. The LM7171 offers low SFDR and THD, ideal for ADC/DAC systems. In addition, the LM7171 is specified for ± 5V operation for portable applications. The LM7171 is built on National’s advanced VIP™ III (Vertically integrated PNP) complementary bipolar process. n n n n n n n n n Easy-To-Use Voltage Feedback Topology Very High Slew Rate: 4100V/µs Wide Unity-Gain Bandwidth: 200 MHz −3 dB Frequency @ AV = +2: 220 MHz Low Supply Current: 6.5 mA High Open Loop Gain: 85 dB High Output Current: 100 mA Differential Gain and Phase: 0.01%, 0.02˚ Specified for ± 15V and ± 5V Operation Applications n n n n n n n n HDSL and ADSL Drivers Multimedia Broadcast Systems Professional Video Cameras Video Amplifiers Copiers/Scanners/Fax HDTV Amplifiers Pulse Amplifiers and Peak Detectors CATV/Fiber Optics Signal Processing Features (Typical Unless Otherwise Noted) Typical Performance Large Signal Pulse Response AV = +2, VS = ± 15V Connection Diagrams 8-Pin DIP/SO DS012385-2 Top View 16-Pin Wide Body SO DS012385-1 DS012385-3 Top View VIP™ is a trademark of National Semiconductor Corporation. © 1999 National Semiconductor Corporation DS012385 www.national.com Ordering Information Package Temperature Range Industrial −40˚C to +85˚C 8-Pin DIP 8-Pin CDIP 10-Pin Ceramic SOIC 8-Pin Small Outline 16-Pin Small Outline LM7171AIN, LM7171BIN LM7171AMJ-QML LM7171AMJ-QMLV LM7171AMWG-QML LM7171AMWG-QMLV LM7171AIM, LM7171BIM LM7171AIMX, LM7171BIMX LM7171AIWM, LM7171BIWM LM7171AWMX, LM7171BWMX 5962-95536 5962-95536 Military −55˚C to +125˚C Rails Rails Trays Rails Tape and Reel Rails Tape and Reel M16B N08E J08A WG10A M08A Transport Media NSC Drawing www.national.com 2 Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. ESD Tolerance (Note 2) Supply Voltage (V+–V−) Differential Input Voltage (Note 11) Output Short Circuit to Ground (Note 3) Storage Temperature Range 2.5 kV 36V ± 10V Continuous −65˚C to +150˚C Maximum Junction Temperature (Note 4) 150˚C Operating Ratings (Note 1) Supply Voltage Junction Temperature Range LM7171AI, LM7171BI Thermal Resistance (θJA) N Package, 8-Pin Molded DIP M Package, 8-Pin Surface Mount M Package, 16-Pin Surface Mount 5.5V ≤ VS ≤ 36V −40˚C ≤ TJ ≤ +85˚C 108˚C/W 172˚C/W 95˚C/W ± 15V DC Electrical Characteristics Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = +15V, V− = −15V, VCM = 0V, and RL = 1 kΩ. Boldface limits apply at the temperature extremes Symbol Parameter Conditions Typ (Note 5) LM7171AI Limit (Note 6) VOS TC VOS IB IOS RIN RO CMRR PSRR VCM AV Input Offset Voltage Input Offset Voltage Average Drift Input Bias Current Input Offset Current Input Resistance Open Loop Output Resistance Common Mode Rejection Ratio Power Supply Rejection Ratio Input Common-Mode Voltage Range Large Signal Voltage Gain (Note 7) RL = 100Ω VO Output Swing RL = 1 kΩ 81 13.3 −13.2 RL = 100Ω 11.8 −10.5 Output Current (Open Loop) (Note 8) Sinking, RL = 100Ω 105 Sourcing, RL = 100Ω 118 RL = 1 kΩ 85 80 75 75 70 13 12.7 −13 −12.7 10.5 9.5 −9.5 −9 105 95 95 90 75 70 70 66 13 12.7 −13 −12.7 10.5 9.5 −9.5 −9 105 95 95 90 dB min dB min V min V max V min V max mA min mA max CMRR > 60 dB VS = ± 15V to ± 5V 90 VCM = ± 10V 105 85 80 85 80 75 70 75 70 dB min dB min V Common Mode Differential Mode 2.7 0.1 40 3.3 15 Ω 10 12 4 6 10 12 4 6 µA max µA max MΩ 0.2 35 1 4 LM7171BI Limit (Note 6) 3 7 mV max µV/˚C Units ± 13.35 3 www.national.com ± 15V DC Electrical Characteristics Symbol Parameter (Continued) Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = +15V, V− = −15V, VCM = 0V, and RL = 1 kΩ. Boldface limits apply at the temperature extremes Conditions Typ (Note 5) LM7171AI Limit (Note 6) Output Current (in Linear Region) ISC IS Output Short Circuit Current Supply Current Sourcing, RL = 100Ω Sinking, RL = 100Ω Sourcing Sinking 100 100 140 135 6.5 8.5 9.5 8.5 9.5 mA max mA LM7171BI Limit (Note 6) mA Units ± 15V AC Electrical Characteristics Unless otherwise specified, TJ = 25˚C, V+ = +15V, V− = −15V, VCM = 0V, and RL = 1 kΩ. Typ Symbol SR Parameter Slew Rate (Note 9) Unity-Gain Bandwidth −3 dB Frequency φm ts tp AD φD Phase Margin Settling Time (0.1%) Propagation Delay Differential Gain (Note 10) Differential Phase (Note 10) Second Harmonic (Note 12) Third Harmonic (Note 12) en in Input-Referred Voltage Noise Input-Referred Current Noise f = 10 kHz 1.5 fIN = 10 kHz fIN = 5 MHz fIN = 10 kHz fIN = 5 MHz f = 10 kHz AV = −1, VO = ± 5V RL = 500Ω AV = −2, VIN = ± 5V, RL = 500Ω 0.01 0.02 −110 −75 −115 −55 14 % Deg dBc dBc dBc dBc AV = +2 Conditions AV = +2, VIN = 13 VPP AV = +2, VIN = 10 VPP (Note 5) 4100 3100 200 220 50 42 5 MHz MHz Deg ns ns LM7171AI Limit (Note 6) LM7171BI Limit (Note 6) V/µs Units ± 5V DC Electrical Characteristics Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = +5V, V− = −5V, VCM = 0V, and RL = 1 kΩ. Boldface limits apply at the temperature extremes Typ Symbol VOS TC VOS IB IOS www.national.com LM7171AI Limit (Note 6) 1.5 4 LM7171BI Limit (Note 6) 3.5 7 mV max µV/˚C Units Parameter Input Offset Voltage Input Offset Voltage Average Drift Input Bias Current Input Offset Current Conditions (Note 5) 0.3 35 3.3 0.1 4 10 12 4 10 12 4 µA max µA ± 5V DC Electrical Characteristics (Continued) Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = +5V, V− = −5V, VCM = 0V, and RL = 1 kΩ. Boldface limits apply at the temperature extremes Typ Symbol Parameter Conditions (Note 5) LM7171AI Limit (Note 6) 6 RIN RO CMRR PSRR VCM AV Input Resistance Output Resistance Common Mode Rejection Ratio Power Supply Rejection Ratio Input Common-Mode Voltage Range Large Signal Voltage Gain (Note 7) RL = 100Ω VO Output Swing RL = 1 kΩ 76 3.4 −3.4 RL = 100Ω 3.1 −3.0 Output Current (Open Loop) (Note 8) Sinking, RL = 100Ω ISC IS Output Short Circuit Current Supply Current Sourcing Sinking 30 135 100 6.2 8 9 8 9 mA max Sourcing, RL = 100Ω 31 RL = 1 kΩ 78 75 70 72 67 3.2 3 −3.2 −3 2.9 2.8 −2.9 −2.8 29 28 29 28 70 65 68 63 3.2 3 −3.2 −3 2.9 2.8 −2.9 −2.8 29 28 29 28 dB min dB min V min V max V min V max mA min mA max mA CMRR > 60 dB VS = ± 15V to ± 5V 90 VCM = ± 2.5V Common Mode Differential Mode 40 3.3 15 104 80 75 85 80 70 65 75 70 Ω dB min dB min V LM7171BI Limit (Note 6) 6 max MΩ Units ± 3.2 ± 5V AC Electrical Characteristics Unless otherwise specified, TJ = 25˚C, V+ = +5V, V− = −5V, VCM = 0V, and RL = 1 kΩ. Typ Symbol SR Parameter Slew Rate (Note 9) Unity-Gain Bandwidth −3 dB Frequency φm ts tp AD Phase Margin Settling Time (0.1%) Propagation Delay Differential Gain (Note 1) AV = −1, VO = ± 1V, RL = 500Ω AV = −2, VIN = ± 1V, RL = 500Ω 0.02 % AV = +2 Conditions AV = +2, VIN = 3.5 VPP (Note 5) 950 125 140 57 56 6 LM7171AI Limit (Note 6) LM7171BI Limit (Note 6) V/µs MHz MHz Deg ns ns Units 5 www.national.com ± 5V AC Electrical Characteristics Symbol φD Parameter Differential Phase (Note 10) Second Harmonic (Note 12) Third Harmonic (Note 12) en in Input-Referred Voltage Noise Input-Referred Current Noise f = 10 kHz (Continued) Unless otherwise specified, TJ = 25˚C, V+ = +5V, V− = −5V, VCM = 0V, and RL = 1 kΩ. Typ Conditions (Note 5) 0.03 fIN = 10 kHz fIN = 5 MHz fIN = 10 kHz fIN = 5 MHz f = 10 kHz −102 −70 −110 −51 14 LM7171AI Limit (Note 6) LM7171BI Limit (Note 6) Deg dBc dBc dBc dBc Units 1.8 Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics. Note 2: Human body model, 1.5 kΩ in series with 100 pF. Note 3: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the maximum allowed junction temperature of 150˚C. Note 4: The maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any ambient temperature is PD = (TJ(max)–TA)/θJA. All numbers apply for packages soldered directly into a PC board. Note 5: Typifcal values represent the most likely parametric norm. Note 6: All limits are guaranteed by testing or statistical analysis. Note 7: Large signal voltage gain is the total output swing divided by the input signal required to produce that swing. For VS = ± 15V, VOUT = ± 5V. For VS = ± 5V, VOUT = ± 1V. Note 8: The open loop output current is guaranteed, by the measurement of the open loop output voltage swing, using 100Ω output load. Note 9: Slew Rate is the average of the raising and falling slew rates. Note 10: Differential gain and phase are measured with AV = +2, VIN = 1 VPP at 3.58 MHz and both input and output 75Ω terminated. Note 11: Input differential voltage is applied at VS = ± 15V. Note 12: Harmonics are measured with VIN = 1 VPP, AV = +2 and RL = 100Ω. Typical Performance Characteristics Supply Current vs Supply Voltage Supply Current vs Temperature unless otherwise noted, TA= 25˚C Input Offset Voltage vs Temperature DS012385-63 DS012385-64 DS012385-65 www.national.com 6 Typical Performance Characteristics Input Bias Current vs Temperature unless otherwise noted, TA= 25˚C (Continued) Short Circuit Current vs Temperature (Sinking) Short Circuit Current vs Temperature (Sourcing) DS012385-66 DS012385-67 DS012385-68 Output Voltage vs Output Current Output Voltage vs Output Current CMRR vs Frequency DS012385-71 DS012385-69 DS012385-70 PSRR vs Frequency PSRR vs Frequency DS012385-72 DS012385-73 Open Loop Frequency Response Open Loop Frequency Response Gain-Bandwidth Product vs Supply Voltage DS012385-51 DS012385-52 DS012385-53 7 www.national.com Typical Performance Characteristics Gain-Bandwidth Product vs Load Capacitance unless otherwise noted, TA= 25˚C (Continued) Large Signal Voltage Gain vs Load Large Signal Voltage Gain vs Load DS012385-54 DS012385-55 DS012385-56 Input Voltage Noise vs Frequency Input Voltage Noise vs Frequency Input Current Noise vs Frequency DS012385-57 DS012385-58 DS012385-59 Input Current Noise vs Frequency Slew Rate vs Supply Voltage Slew Rate vs Input Voltage DS012385-60 DS012385-61 DS012385-62 www.national.com 8 Typical Performance Characteristics Slew Rate vs Load Capacitance unless otherwise noted, TA= 25˚C (Continued) Open Loop Output Impedance vs Frequency Open Loop Output Impedance vs Frequency DS012385-23 DS012385-25 DS012385-26 Large Signal Pulse Response AV = −1, VS = ± 15V Large Signal Pulse Response AV = −1, VS = ± 5V Large Signal Pulse Response AV = +2, VS = ± 15V DS012385-27 DS012385-28 DS012385-29 Large Signal Pulse Response AV = +2, VS = ± 5V Small Signal Pulse Response AV = −1, VS = ± 15V Small Signal Pulse Response AV = −1, VS = ± 5V DS012385-30 DS012385-31 DS012385-32 9 www.national.com Typical Performance Characteristics Small Signal Pulse Response AV = +2, VS = ± 15V unless otherwise noted, TA= 25˚C (Continued) Small Signal Pulse Response AV = +2, VS = ± 5V Closed Loop Frequency Response vs Supply Voltage (AV = +2) DS012385-33 DS012385-34 DS012385-35 Closed Loop Frequency Response vs Capacitive Load (AV = +2) Closed Loop Frequency Response vs Capacitive Load (AV = +2) Closed Loop Frequency Response vs Input Signal Level (AV = +2) DS012385-36 DS012385-37 DS012385-38 Closed Loop Frequency Response vs Input Signal Level (AV = +2) Closed Loop Frequency Response vs Input Signal Level (AV = +2) Closed Loop Frequency Response vs Input Signal Level (AV = +2) DS012385-43 DS012385-39 DS012385-40 www.national.com 10 Typical Performance Characteristics Closed Loop Frequency Response vs Input Signal Level (AV = +4) unless otherwise noted, TA= 25˚C (Continued) Closed Loop Frequency Response vs Input Signal Level (AV = +4) Closed Loop Frequency Response vs Input Signal Level (AV = +4) DS012385-44 DS012385-45 DS012385-41 Closed Loop Frequency Response vs Input Signal Level (AV = +4) Total Harmonic Distortion vs Frequency (Note 13) Total Harmonic Distortion vs Frequency (Note 13) DS012385-46 DS012385-42 DS012385-47 Undistorted Output Swing vs Frequency Undistorted Output Swing vs Frequency Undistorted Output Swing vs Frequency DS012385-49 DS012385-48 DS012385-50 11 www.national.com Typical Performance Characteristics Harmonic Distortion vs Frequency unless otherwise noted, TA= 25˚C (Continued) Maximum Power Dissipation vs Ambient Temperature Harmonic Distortion vs Frequency DS012385-74 DS012385-75 DS012385-20 Note 13: The THD measurement at low frequency is limited by the test instrument. Simplified Schematic Diagram DS012385-9 Note: M1 and M2 are current mirrors. Application Notes LM7171 Performance Discussion The LM7171 is a very high speed, voltage feedback amplifier. It consumes only 6.5 mA supply current while providing a unity-gain bandwidth of 200 MHz and a slew rate of 4100V/ µs. It also has other great features such as low differential gain and phase and high output current. The LM7171 is a true voltage feedback amplifier. Unlike current feedback amplifiers (CFAs) with a low inverting input impedance and a high non-inverting input impedance, both inputs of voltage feedback amplifiers (VFAs) have high impedance nodes. The low impedance inverting input in www.national.com 12 CFAs and a feedback capacitor create an additional pole that will lead to instability. As a result, CFAs cannot be used in traditional op amp circuits such as photodiode amplifiers, I-to-V converters and integrators where a feedback capacitor is required. LM7171 Circuit Operation The class AB input stage in LM7171 is fully symmetrical and has a similar slewing characteristic to the current feedback amplifiers. In the LM7171 Simplified Schematic, Q1 through Q4 form the equivalent of the current feedback input buffer, RE the equivalent of the feedback resistor, and stage A buff- LM7171 Circuit Operation (Continued) ers the inverting input. The triple-buffered output stage isolates the gain stage from the load to provide low output impedance. LM7171 Slew Rate Characteristic The slew rate of LM7171 is determined by the current available to charge and discharge an internal high impedance node capacitor. This current is the differential input voltage divided by the total degeneration resistor RE. Therefore, the slew rate is proportional to the input voltage level, and the higher slew rates are achievable in the lower gain configurations. A curve of slew rate versus input voltage level is provided in the “Typical Performance Characteristics”. When a very fast large signal pulse is applied to the input of an amplifier, some overshoot or undershoot occurs. By placing an external resistor such as 1 kΩ in series with the input of LM7171, the bandwidth is reduced to help lower the overshoot. COMPONENT SELECTION AND FEEDBACK RESISTOR It is important in high speed applications to keep all component leads short. For discrete components, choose carbon composition-type resistors and mica-type capacitors. Surface mount components are preferred over discrete components for minimum inductive effect. Large values of feedback resistors can couple with parasitic capacitance and cause undesirable effects such as ringing or oscillation in high speed amplifiers. For LM7171, a feedback resistor of 510Ω gives optimal performance. Compensation for Input Capacitance The combination of an amplifier’s input capacitance with the gain setting resistors adds a pole that can cause peaking or oscillation. To solve this problem, a feedback capacitor with a value CF > (RG x CIN)/RF can be used to cancel that pole. For LM7171, a feedback capacitor of 2 pF is recommended. Figure 1 illustrates the compensation circuit. Slew Rate Limitation If the amplifier’s input signal has too large of an amplitude at too high of a frequency, the amplifier is said to be slew rate limited; this can cause ringing in time domain and peaking in frequency domain at the output of the amplifier. In the “Typical Performance Characteristics” section, there are several curves of AV = +2 and AV = +4 versus input signal levels. For the AV = +4 curves, no peaking is present and the LM7171 responds identically to the different input signal levels of 30 mV, 100 mV and 300 mV. For the AV = +2 curves, with slight peaking occurs. This peaking at high frequency ( > 100 MHz) is caused by a large input signal at high enough frequency that exceeds the amplifier’s slew rate. The peaking in frequency response does not limit the pulse response in time domain, and the LM7171 is stable with noise gain of ≥+2. DS012385-10 FIGURE 1. Compensating for Input Capacitance Power Supply Bypassing Bypassing the power supply is necessary to maintain low power supply impedance across frequency. Both positive and negative power supplies should be bypassed individually by placing 0.01 µF ceramic capacitors directly to power supply pins and 2.2 µF tantalum capacitors close to the power supply pins. Layout Consideration PRINTED CIRCUIT BOARDS AND HIGH SPEED OP AMPS There are many things to consider when designing PC boards for high speed op amps. Without proper caution, it is very easy to have excessive ringing, oscillation and other degraded AC performance in high speed circuits. As a rule, the signal traces should be short and wide to provide low inductance and low impedance paths. Any unused board space needs to be grounded to reduce stray signal pickup. Critical components should also be grounded at a common point to eliminate voltage drop. Sockets add capacitance to the board and can affect high frequency performance. It is better to solder the amplifier directly into the PC board without using any socket. USING PROBES Active (FET) probes are ideal for taking high frequency measurements because they have wide bandwidth, high input impedance and low input capacitance. However, the probe ground leads provide a long ground loop that will produce errors in measurement. Instead, the probes can be grounded directly by removing the ground leads and probe jackets and using scope probe jacks. DS012385-11 FIGURE 2. Power Supply Bypassing Termination In high frequency applications, reflections occur if signals are not properly terminated. Figure 3 shows a properly terminated signal while Figure 4 shows an improperly terminated signal. 13 www.national.com Termination (Continued) DS012385-12 FIGURE 5. Isolation Resistor Used to Drive Capacitive Load DS012385-17 FIGURE 3. Properly Terminated Signal DS012385-13 FIGURE 6. The LM7171 Driving a 150 pF Load with a 50Ω Isolation Resistor Power Dissipation DS012385-18 FIGURE 4. Improperly Terminated Signal To minimize reflection, coaxial cable with matching characteristic impedance to the signal source should be used. The other end of the cable should be terminated with the same value terminator or resistor. For the commonly used cables, RG59 has 75Ω characteristic impedance, and RG58 has 50Ω characteristic impedance. Driving Capacitive Loads Amplifiers driving capacitive loads can oscillate or have ringing at the output. To eliminate oscillation or reduce ringing, an isolation resistor can be placed as shown below in Figure 5 The combination of the isolation resistor and the load capacitor forms a pole to increase stability by adding more phase margin to the overall system. The desired performance depends on the value of the isolation resistor; the bigger the isolation resistor, the more damped the pulse response becomes. For LM7171, a 50Ω isolation resistor is recommended for initial evaluation. Figure 6 shows the LM7171 driving a 150 pF load with the 50Ω isolation resistor. The maximum power allowed to dissipate in a device is defined as: PD = (TJ(max) − TA)/θJA Where PD is the power dissipation in a device is the maximum junction temperature TJ(max) is the ambient temperature TA is the thermal resistance of a particular package θJA For example, for the LM7171 in a SO-8 package, the maximum power dissipation at 25˚C ambient temperature is 730 mW. Thermal resistance, θJA, depends on parameters such as die size, package size and package material. The smaller the die size and package, the higher θJA becomes. The 8-pin DIP package has a lower thermal resistance (108˚C/W) than that of 8-pin SO (172˚C/W). Therefore, for higher dissipation capability, use an 8-pin DIP package. The total power dissipated in a device can be calculated as: PD = PQ + PL PQ is the quiescent power dissipated in a device with no load connected at the output. PL is the power dissipated in the device with a load connected at the output; it is not the power dissipated by the load. Furthermore, PQ: = supply current x total supply voltage with no load PL: = output current x (voltage difference between supply voltage and output voltage of the same side of supply voltage) www.national.com 14 Power Dissipation (Continued) Application Circuit Fast Instrumentation Amplifier For example, the total power dissipated by the LM7171 with VS = ± 15V and output voltage of 10V into 1 kΩ is PD = PQ + PL = (6.5 mA) x (30V) + (10 mA) x (15V − 10V) = 195 mW + 50 mW = 245 mW DS012385-14 DS012385-80 Multivibrator DS012385-81 DS012385-15 Pulse Width Modulator DS012385-16 15 www.national.com Application Circuit (Continued) Video Line Driver DS012385-21 www.national.com 16 Design Kit A design kit is available for the LM7171. The design kit contains: Pitch Pack A pitch pack is available for the LM7171. The pitch pack contains: • • • • High Speed Evaluation Board LM7171 in 8-pin DIP Package LM7171 Datasheet Pspice Macromodel DIskette With The LM7171 Macromodel • • • LM7171 in 8-pin DIP Package LM7171 Datasheet Pspice Macromodel DIskette With The LM7171 Macromodel • Amplifier Selection Guide • Amplifier Selection Guide Contact your local National Semiconductor sales office to obtain a pitch pack and design kit. 17 www.national.com Physical Dimensions inches (millimeters) unless otherwise noted Order Number LM7171AIM, LM7171BIM, LM7171AIMX or LM7171BIMX 8-Lead (0.150" Wide) Molded Small Outline Package, JEDEC NS Package Number M08A www.national.com 18 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Order Number LM7171AIWM, LM7171BIWM, LM7171AIWMX or LM7171BIWMX 16-Lead (0.300" Wide) Molded Small Outline Package, JEDEC NS Package Number M16B Order Number LM7171AIN or LM7171BIN 8-Lead (0.300" Wide) Molded Dual-In-Line Package, JEDEC NS Package Number N08E 19 www.national.com LM7171 Very High Speed, High Output Current, Voltage Feedback Amplifier Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Order Number 5962-9553601QPA 8-Lead Dual-In-Line Package NS Package Number J08A NSID is LM7171AMJ/883 LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. National Semiconductor Corporation Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: support@nsc.com www.national.com National Semiconductor Europe Fax: +49 (0) 1 80-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 1 80-530 85 85 English Tel: +49 (0) 1 80-532 78 32 Français Tel: +49 (0) 1 80-532 93 58 Italiano Tel: +49 (0) 1 80-534 16 80 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: sea.support@nsc.com National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507 National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.