LM7171Very High Speed, High Output Current, VoltageFeedback AmplifierGeneral DescriptionThe LM7171 is a high speed voltage feedback amplifier thathas the slewing characteristic of a current feedback ampli-fier; yet it can be used in all traditional voltage feedback am-plifier configurations. The LM7171 is stable for gains as lowas +2 or −1. It provides a very high slew rate at 4100V/µsand a wide unity-gain bandwidth of 200 MHz while consum-ing only 6.5 mA of supply current. It is ideal for video andhigh speed signal processing applications such as HDSLand pulse amplifiers. With 100 mA output current, theLM7171 can be used for video distribution, as a transformerdriver or as a laser diode driver.Operation on±15V power supplies allows for large signalswings and provides greater dynamic range andsignal-to-noise ratio. The LM7171 offers low SFDR andTHD, ideal for ADC/DAC systems. In addition, the LM7171 isspecified for±5V operation for portable applications.The LM7171 is built on National’s advanced VIP™III (Verti-cally integrated PNP) complementary bipolar process.Features(Typical Unless Otherwise Noted)n Easy-To-Use Voltage Feedback Topologyn Very High Slew Rate: 4100V/µsn Wide Unity-Gain Bandwidth: 200 MHzn −3 dB Frequency@AV=+2: 220 MHzn Low Supply Current: 6.5 mAn High Open Loop Gain: 85 dBn High Output Current: 100 mAn Differential Gain and Phase: 0.01%, 0.02˚n Specified for±15V and±5V OperationApplicationsn HDSL and ADSL Driversn Multimedia Broadcast Systemsn Professional Video Camerasn Video Amplifiersn Copiers/Scanners/Faxn HDTV Amplifiersn Pulse Amplifiers and Peak Detectorsn CATV/Fiber Optics Signal ProcessingTypical Performance Connection DiagramsVIP™is a trademark of National Semiconductor Corporation.Large Signal Pulse ResponseAV=+2, VS=±15VDS012385-18-Pin DIP/SODS012385-2Top View16-Pin Wide Body SODS012385-3Top ViewMay 1999LM7171 Very High Speed, High Output Current, Voltage Feedback Amplifier© 1999 National Semiconductor Corporation DS012385 www.national.comOrdering InformationPackage Temperature Range TransportMediaNSCDrawingIndustrial Military−40˚C to +85˚C −55˚C to +125˚C8-Pin DIP LM7171AIN, LM7171BIN Rails N08E8-Pin CDIP LM7171AMJ-QMLLM7171AMJ-QMLV5962-95536 Rails J08A10-Pin CeramicSOICLM7171AMWG-QMLLM7171AMWG-QMLV5962-95536 Trays WG10A8-Pin LM7171AIM, LM7171BIM Rails M08ASmall Outline LM7171AIMX, LM7171BIMX Tape and Reel16-Pin LM7171AIWM, LM7171BIWM Rails M16BSmall Outline LM7171AWMX, LM7171BWMX Tape and Reelwww.national.com 2Absolute 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) 2.5 kVSupply Voltage (V+–V−) 36VDifferential Input Voltage (Note 11)±10VOutput Short Circuit to Ground(Note 3) ContinuousStorage Temperature Range −65˚C to +150˚CMaximum Junction Temperature(Note 4) 150˚COperating Ratings (Note 1)Supply Voltage 5.5V ≤ VS≤ 36VJunction Temperature RangeLM7171AI, LM7171BI −40˚C ≤ TJ≤ +85˚CThermal Resistance (θJA)N Package, 8-Pin Molded DIP 108˚C/WM Package, 8-Pin Surface Mount 172˚C/WM Package, 16-Pin Surface Mount 95˚C/W±15V DC Electrical CharacteristicsUnless otherwise specified, all limits guaranteed for TJ=25˚C, V+=+15V, V−=−15V, VCM=0V, and RL=1kΩ.Boldfacelimits apply at the temperature extremesSymbol Parameter Conditions Typ(Note 5)LM7171AI LM7171BI UnitsLimit Limit(Note 6) (Note 6)VOSInput Offset Voltage 0.2 1 3 mV47maxTC VOSInput Offset Voltage 35 µV/˚CAverage DriftIBInput Bias Current 2.7 10 10 µA12 12 maxIOSInput Offset Current 0.1 4 4 µA66maxRINInput Resistance Common Mode 40 MΩDifferential Mode 3.3ROOpen Loop Output 15 ΩResistanceCMRR Common Mode VCM=±10V 105 85 75 dBRejection Ratio 80 70 minPSRR Power Supply VS=±15V to±5V 90 85 75 dBRejection Ratio 80 70 minVCMInput Common-Mode CMRR>60 dB±13.35 VVoltage RangeAVLarge Signal Voltage RL=1kΩ 85 80 75 dBGain (Note 7) 75 70 minRL=100Ω 81 75 70 dB70 66 minVOOutput Swing RL=1kΩ 13.3 13 13 V12.7 12.7 min−13.2 −13 −13 V−12.7 −12.7 maxRL=100Ω 11.8 10.5 10.5 V9.5 9.5 min−10.5 −9.5 −9.5 V−9 −9 maxOutput Current Sourcing, RL=100Ω 118 105 105 mA(Open Loop) 95 95 min(Note 8) Sinking, RL=100Ω 105 95 95 mA90 90 maxwww.national.com3±15V DC Electrical Characteristics (Continued)Unless otherwise specified, all limits guaranteed for TJ=25˚C, V+=+15V, V−=−15V, VCM=0V, and RL=1kΩ.Boldfacelimits apply at the temperature extremesSymbol Parameter Conditions Typ(Note 5)LM7171AI LM7171BI UnitsLimit Limit(Note 6) (Note 6)Output Current Sourcing, RL=100Ω 100 mA(in Linear Region) Sinking, RL=100Ω 100ISCOutput Short Circuit Sourcing 140 mACurrent Sinking 135ISSupply Current 6.5 8.5 8.5 mA9.5 9.5 max±15V AC Electrical CharacteristicsUnless otherwise specified, TJ=25˚C, V+=+15V, V−=−15V, VCM=0V, and RL=1kΩ.Typ LM7171AI LM7171BISymbol Parameter Conditions (Note 5) Limit Limit Units(Note 6) (Note 6)SR Slew Rate (Note 9) AV=+2, VIN=13 VPP4100 V/µsAV=+2, VIN=10 VPP3100Unity-Gain Bandwidth 200 MHz−3 dB Frequency AV=+2 220 MHzφmPhase Margin 50 DegtsSettling Time (0.1%)AV=−1, VO=±5V 42 nsRL=500ΩtpPropagation Delay AV=−2, VIN=±5V, 5 nsRL=500ΩADDifferential Gain (Note 10) 0.01%φDDifferential Phase (Note 10) 0.02 DegSecond Harmonic (Note 12) fIN=10 kHz −110 dBcfIN=5 MHz −75 dBcThird Harmonic (Note 12) fIN=10 kHz −115 dBcfIN=5 MHz −55 dBcenInput-Referred f=10 kHz14Voltage NoiseinInput-Referred f=10 kHz1.5Current Noise±5V DC Electrical CharacteristicsUnless otherwise specified, all limits guaranteed for TJ=25˚C, V+=+5V, V−=−5V, VCM=0V, and RL=1kΩ.Boldface lim-its apply at the temperature extremesTyp LM7171AI LM7171BISymbol Parameter Conditions (Note 5) Limit Limit Units(Note 6) (Note 6)VOSInput Offset Voltage 0.3 1.5 3.5 mV47maxTC VOSInput Offset Voltage 35 µV/˚CAverage DriftIBInput Bias Current 3.3 10 10 µA12 12 maxIOSInput Offset Current 0.1 4 4 µAwww.national.com 4±5V DC Electrical Characteristics (Continued)Unless otherwise specified, all limits guaranteed for TJ=25˚C, V+=+5V, V−=−5V, VCM=0V, and RL=1kΩ.Boldface lim-its apply at the temperature extremesTyp LM7171AI LM7171BISymbol Parameter Conditions (Note 5) Limit Limit Units(Note 6) (Note 6)66maxRINInput Resistance Common Mode 40 MΩDifferential Mode 3.3ROOutput Resistance 15 ΩCMRR Common Mode VCM=±2.5V 104 80 70 dBRejection Ratio 75 65 minPSRR Power Supply