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LM7171
SNOS760C MAY 1999REVISED SEPTEMBER 2014
LM7171 Very High Speed, High Output Current, Voltage Feedback Amplifier
1 Features 3 Description
The LM7171 is a high speed voltage feedback
1 (Typical Unless Otherwise Noted) amplifier that has the slewing characteristic of a
Easy-to-Use Voltage Feedback Topology current feedback amplifier, yet it can be used in all
Very High Slew Rate: 4100 V/μstraditional voltage feedback amplifier configurations.
The LM7171 is stable for gains as low as +2 or 1. It
Wide Unity-Gain Bandwidth: 200 MHz provides a very high slew rate at 4100V/μs and a
3 dB Frequency @ AV= +2: 220 MHz wide unity-gain bandwidth of 200 MHz while
Low Supply Current: 6.5 mA consuming only 6.5 mA of supply current. It is ideal
for video and high speed signal processing
High Open Loop Gain: 85 dB applications such as HDSL and pulse amplifiers. With
High Output Current: 100 mA 100 mA output current, the LM7171 can be used for
Differential Gain and Phase: 0.01%, 0.02° video distribution, as a transformer driver or as a
Specified for ±15V and ±5V Operation laser diode driver.
Operation on ±15 V power supplies allows for large
2 Applications signal swings and provides greater dynamic range
HDSL and ADSL Drivers and signal-to-noise ratio. The LM7171 offers low
SFDR and THD, ideal for ADC/DAC systems. In
Multimedia Broadcast Systems addition, the LM7171 is specified for ±5 V operation
Professional Video Cameras for portable applications.
Video Amplifiers The LM7171 is built on TI's advanced VIP™ III
Copiers/Scanners/Fax (Vertically integrated PNP) complementary bipolar
HDTV Amplifiers process.
Pulse Amplifiers and Peak Detectors Device Information(1)
CATV/Fiber Optics Signal Processing PART NUMBER PACKAGE BODY SIZE (NOM)
LM7171 SOIC (8) 4.90 mm × 3.91 mm
LM7171 PDIP (8) 9.81 mm × 6.35 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Large Signal Pulse Response
Simplified Schematic Diagram AV= +2, VS= ±15V
Note: M1 and M2 are current mirrors.
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
LM7171
SNOS760C MAY 1999REVISED SEPTEMBER 2014
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Table of Contents
7.2 Circuit Operation..................................................... 18
1 Features.................................................................. 17.3 Slew Rate Characteristic......................................... 18
2 Applications ........................................................... 17.4 Slew Rate Limitation ............................................... 18
3 Description............................................................. 17.5 Compensation For Input Capacitance .................... 19
4 Revision History..................................................... 27.6 Application Circuit ................................................... 19
5 Pin Configuration and Functions......................... 38 Power Supply Recommendations...................... 21
6 Specifications......................................................... 48.1 Power Supply Bypassing ........................................ 21
6.1 Absolute Maximum Ratings ...................................... 48.2 Termination............................................................. 22
6.2 Handling Ratings....................................................... 48.3 Driving Capacitive Loads ........................................ 23
6.3 Recommended Operating Conditions....................... 48.4 Power Dissipation ................................................... 24
6.4 Thermal Information.................................................. 49 Layout................................................................... 25
6.5 ±15V DC Electrical Characteristics .......................... 59.1 Layout Guidelines ................................................... 25
6.6 ±15V AC Electrical Characteristics .......................... 610 Device and Documentation Support................. 26
6.7 ±5V DC Electrical Characteristics ............................ 710.1 Trademarks........................................................... 26
6.8 ±5V AC Electrical Characteristics ............................ 810.2 Electrostatic Discharge Caution............................ 26
6.9 Typical Performance Characteristics ........................ 910.3 Glossary................................................................ 26
7 Application and Implementation ........................ 18 11 Mechanical, Packaging, and Orderable
7.1 Application Information............................................ 18 Information ........................................................... 26
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (March 2013) to Revision C Page
Changed data sheet flow and layout to conform with new TI standards. Added the following sections: Device
Information Table, Application and Implementation; Layout; Device and Documentation Support; Mechanical,
Packaging, and Ordering Information .................................................................................................................................... 1
Changed "Junction Temperature Range" to " Operating Temperature Range" and deleted TJ............................................ 4
Deleted TJ= 25°C for Electrical Characteristics tables.......................................................................................................... 5
Changes from Revision A (March 2013) to Revision B Page
Changed layout of National Data Sheet to TI format ........................................................................................................... 20
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5 Pin Configuration and Functions
8-Pin
Package D
(Top View)
Pin Functions
PIN I/O DESCRIPTION
NAME NO.
N/C 1 No Connection
-IN 2 I Inverting Power Supply
+IN 3 I Non-inverting Power Supply
V- 4 I Supply Voltage
N/C 5 No Connection
OUTPUT 6 O Output
V+ 7 I Supply Voltage
N/C 8 No Connection
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6 Specifications
6.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
MIN MAX UNIT
Supply Voltage (V+–V) 36 V
Differential Input Voltage (2) ±10 V
Output Short Circuit to Ground (3) Continuous
Maximum Junction Temperature (4) 150 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended
Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) Input differential voltage is applied at VS= ±15V.
(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.
(4) The maximum power dissipation is a function of TJ(MAX), RθJA, and TA. The maximum allowable power dissipation at any ambient
temperature is PD= (TJ(MAX)–TA)/RθJA. All numbers apply for packages soldered directly into a PC board.
6.2 Handling Ratings MIN MAX UNIT
Tstg Storage temperature range 65 +150 °C
Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all 2500
V(ESD) Electrostatic discharge(1) V
pins(2)
(1) Human body model, 1.5 kΩin series with 100 pF.
(2) JEDEC document JEP155 states that 2500-V HBM allows safe manufacturing with a standard ESD control process.
6.3 Recommended Operating Conditions(1)
over operating free-air temperature range (unless otherwise noted) MIN TYP MAX UNIT
Supply Voltage 5.5V VS36 V
Operating Temperature Range: LM7171AI, LM7171BI 40 +85 °C
(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 specified. For ensured specifications and the test
conditions, see the Electrical Characteristics.
6.4 Thermal Information P (PDIP) D (SOIC)
THERMAL METRIC(1) UNIT
8 PINS 8 PINS
RθJA Junction-to-ambient thermal resistance 108° 172° °C/W
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
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6.5 ±15V DC Electrical Characteristics
Unless otherwise noted, all limits are specified for V+= +15 V, V= –15 V, VCM = 0V, and RL= 1 kΩ.Boldface limits apply at
the temperature extremes
PARAMETER TEST CONDITIONS TYP LM7171AI LM7171BI UNIT
(1) LIMIT(2) LIMIT(2)
VOS Input Offset Voltage 0.2 1 3 mV
4 7 max
TC VOS Input Offset Voltage Average 35 μV/°C
Drift
IBInput Bias Current 2.7 10 10 μA
12 12 max
IOS Input Offset Current 0.1 4 4 μA
6 6 max
RIN Input Resistance Common Mode 40 MΩ
Differential Mode 3.3
ROOpen Loop Output 15 Ω
Resistance
CMRR Common Mode Rejection VCM = ±10V 105 85 75 dB
Ratio 80 70 min
PSRR Power Supply Rejection Ratio VS= ±15V to ±5V 90 85 75 dB
80 70 min
VCM Input Common-Mode Voltage CMRR > 60 dB ±13.35 V
Range
AVLarge Signal Voltage Gain (3) RL= 1 kΩ85 80 75 dB
75 70 min
RL= 100Ω81 75 70 dB
70 66 min
VOOutput Swing RL= 1 kΩ13.3 13 13 V
12.7 12.7 min
13.2 13 13 V
12.7 12.7 max
RL= 100Ω11.8 10.5 10.5 V
9.5 9.5 min
10.5 9.5 9.5 V
99max
Output Current (Open Loop) Sourcing, RL= 100Ω118 105 105 mA
(4) 95 95 min
Sinking, RL= 100Ω105 95 95 mA
90 90 max
Output Current (in Linear Sourcing, RL= 100Ω100 mA
Region) Sinking, RL= 100Ω100
ISC Output Short Circuit Current Sourcing 140 mA
Sinking 135
ISSupply Current 6.5 8.5 8.5 mA
9.5 9.5 max
(1) Typical values represent the most likely parametric norm.
(2) All limits are specified by testing or statistical analysis.
(3) 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.
(4) The open loop output current is specified, by the measurement of the open loop output voltage swing, using 100Ωoutput load.
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6.6 ±15V AC Electrical Characteristics
Unless otherwise noted, all limits are specified for V+= +15V, V=15V, VCM = 0V, and RL= 1 kΩ.
PARAMETER CONDITIONS LM7171AI LM7171BI UNIT
TYP(1) LIMIT(2) LIMIT(2)
SR Slew Rate (3) AV= +2, VIN = 13 VPP 4100 V/μs
AV= +2, VIN = 10 VPP 3100
Unity-Gain Bandwidth 200 MHz
3 dB Frequency AV= +2 220 MHz
φmPhase Margin 50 Deg
tsSettling Time (0.1%) AV=1, VO= ±5V 42 ns
RL= 500Ω
tpPropagation Delay AV=2, VIN = ±5V, 5 ns
RL= 500Ω
ADDifferential Gain (4) 0.01%
φDDifferential Phase (4) 0.02 Deg
Second Harmonic Distortion(5) fIN = 10 kHz 110 dBc
fIN = 5 MHz 75 dBc
Third Harmonic Distortion(5) fIN = 10 kHz 115 dBc
fIN = 5 MHz 55 dBc
enInput-Referred Voltage Noise f = 10 kHz 14 nV/Hz
inInput-Referred Current Noise f = 10 kHz 1.5 pA/Hz
(1) Typical values represent the most likely parametric norm.
(2) All limits are specified by testing or statistical analysis.
(3) Slew Rate is the average of the raising and falling slew rates.
(4) Differential gain and phase are measured with AV= +2, VIN = 1 VPP at 3.58 MHz and both input and output 75Ωterminated.
(5) Harmonics are measured with VIN = 1 VPP, AV= +2 and RL= 100Ω.
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6.7 ±5V DC Electrical Characteristics
Unless otherwise noted, all limits are specified for V+= +5V, V=5V, VCM = 0V, and RL= 1 kΩ.Boldface limits apply at the
temperature extremes
PARAMETER TEST CONDITIONS LM7171AI LM7171BI UNIT
TYP(1) LIMIT(2) LIMIT(2)
VOS Input Offset Voltage 0.3 1.5 3.5 mV
4 7 max
TC VOS Input Offset Voltage Average 35 μV/°C
Drift
IBInput Bias Current 3.3 10 10 μA
12 12 max
IOS Input Offset Current 0.1 4 4 μA
6 6 max
RIN Input Resistance Common Mode 40 MΩ
Differential Mode 3.3
ROOutput Resistance 15 Ω
CMRR Common Mode Rejection VCM = ±2.5V 104 80 70 dB
Ratio 75 65 min
PSRR Power Supply Rejection Ratio VS= ±15V to ±5V 90 85 75 dB
80 70 min
VCM Input Common-Mode Voltage CMRR > 60 dB ±3.2 V
Range
AVLarge Signal Voltage Gain (3) RL= 1 kΩ78 75 70 dB
70 65 min
RL= 100Ω76 72 68 dB
67 63 min
VOOutput Swing RL= 1 kΩ3.4 3.2 3.2 V
3 3 min
3.4 3.2 3.2 V
33max
RL= 100Ω3.1 2.9 2.9 V
2.8 2.8 min
3.0 2.9 2.9 V
2.8 2.8 max
Output Current (Open Loop) Sourcing, RL= 100Ω31 29 29 mA
(4) 28 28 min
Sinking, RL= 100Ω30 29 29 mA
28 28 max
ISC Output Short Circuit Current Sourcing 135 mA
Sinking 100
ISSupply Current 6.2 8 8 mA
9 9 max
(1) Typical values represent the most likely parametric norm.
(2) All limits are specified by testing or statistical analysis.
(3) 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.
(4) The open loop output current is specified, by the measurement of the open loop output voltage swing, using 100Ωoutput load.
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6.8 ±5V AC Electrical Characteristics
Unless otherwise noted, all limits are specified for V+= +5V, V=5V, VCM = 0V, and RL= 1 kΩ.
PARAMETER TEST CONDITIONS LM7171AI LM7171BI UNIT
TYP(1) LIMIT(2) LIMIT(2)
SR Slew Rate (3) AV= +2, VIN = 3.5 VPP 950 V/μs
Unity-Gain Bandwidth 125 MHz
3 dB Frequency AV= +2 140 MHz
φmPhase Margin 57 Deg
tsSettling Time (0.1%) AV=1, VO= ±1V, 56 ns
RL= 500Ω
tpPropagation Delay AV=2, VIN = ±1V, 6 ns
RL= 500Ω
ADDifferential Gain (4) 0.02%
φDDifferential Phase (5) 0.03 Deg
Second Harmonic Distortion(6) fIN = 10 kHz 102 dBc
fIN = 5 MHz 70 dBc
Third Harmonic Distortion(6) fIN = 10 kHz 110 dBc
fIN = 5 MHz 51 dBc
enInput-Referred Voltage Noise f = 10 kHz 14 nV/Hz
inInput-Referred Current Noise f = 10 kHz 1.8 pA/Hz
(1) Typical values represent the most likely parametric norm.
(2) All limits are specified by testing or statistical analysis.
(3) Slew Rate is the average of the raising and falling slew rates.
(4) 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 specified. For ensured specifications and the test
conditions, see the Electrical Characteristics.
(5) Differential gain and phase are measured with AV= +2, VIN = 1 VPP at 3.58 MHz and both input and output 75Ωterminated.
(6) Harmonics are measured with VIN = 1 VPP, AV= +2 and RL= 100Ω.
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6.9 Typical Performance Characteristics
unless otherwise noted, TA= 25°C
Figure 1. Supply Current vs. Supply Voltage Figure 2. Supply Current vs. Temperature
Figure 4. Input Bias Current vs. Temperature
Figure 3. Input Offset Voltage vs. Temperature
Figure 5. Short Circuit Current vs. Temperature (Sourcing) Figure 6. Short Circuit Current vs. Temperature (Sinking)
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Typical Performance Characteristics (continued)
unless otherwise noted, TA= 25°C
Figure 7. Output Voltage vs. Output Current Figure 8. Output Voltage vs. Output Current
Figure 9. CMRR vs. Frequency Figure 10. PSRR vs. Frequency
Figure 11. PSRR vs. Frequency Figure 12. Open Loop Frequency Response
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Typical Performance Characteristics (continued)
unless otherwise noted, TA= 25°C
Figure 14. Gain-Bandwidth Product vs. Supply Voltage
Figure 13. Open Loop Frequency Response
Figure 16. Large Signal Voltage Gain vs. Load
Figure 15. Gain-Bandwidth Product vs. Load Capacitance
Figure 17. Large Signal Voltage Gain vs. Load Figure 18. Input Voltage Noise vs. Frequency
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Typical Performance Characteristics (continued)
unless otherwise noted, TA= 25°C
Figure 19. Input Voltage Noise vs. Frequency Figure 20. Input Current Noise vs. Frequency
Figure 22. Slew Rate vs. Supply Voltage
Figure 21. Input Current Noise vs. Frequency
Figure 23. Slew Rate vs. Input Voltage Figure 24. Slew Rate vs. Load Capacitance
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Typical Performance Characteristics (continued)
unless otherwise noted, TA= 25°C
Figure 25. Open Loop Output Impedance vs. Frequency Figure 26. Open Loop Output Impedance vs Frequency
Figure 27. Large Signal Pulse Response AV=1, VS= ±15V Figure 28. Large Signal Pulse Response AV=1, VS= ±5V
Figure 29. Large Signal Pulse Response AV= +2, VS= ±15V Figure 30. Large Signal Pulse Response AV= +2, VS= ±5V
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Typical Performance Characteristics (continued)
unless otherwise noted, TA= 25°C
Figure 31. Small Signal Pulse Response AV=1, VS= ±15V Figure 32. Small Signal Pulse Response AV=1, VS= ±5V
Figure 33. Small Signal Pulse Response AV= +2, VS= ±15V Figure 34. Small Signal Pulse Response AV= +2, VS= ±5V
Figure 36. Closed Loop Frequency Response vs. Capacitive
Figure 35. Closed Loop Frequency Response vs. Supply Load (AV= +2)
Voltage (AV= +2)
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Typical Performance Characteristics (continued)
unless otherwise noted, TA= 25°C
Figure 37. Closed Loop Frequency Response vs. Capacitive Figure 38. Closed Loop Frequency Response vs. Input
Load (AV= +2) Signal Level (AV= +2)
Figure 39. Closed Loop Frequency Response vs. Input Figure 40. Closed Loop Frequency Response vs. Input
Signal Level (AV= +2) Signal Level (AV= +2)
Figure 42. Closed Loop Frequency Response vs. Input
Figure 41. Closed Loop Frequency Response vs. Input Signal Level (AV= +4)
Signal Level (AV= +2)
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Typical Performance Characteristics (continued)
unless otherwise noted, TA= 25°C
Figure 43. Closed Loop Frequency Response vs. Input Figure 44. Closed Loop Frequency Response vs. Input
Signal Level (AV= +4) Signal Level (AV= +4)
Figure 46. Total Harmonic Distortion vs. Frequency (1)
Figure 45. Closed Loop Frequency Response vs. Input
Signal Level (AV= +4)
Figure 48. Undistorted Output Swing vs. Frequency
Figure 47. Total Harmonic Distortion vs. Frequency (1)
(1) The THD measurement at low frequency is limited by the test instrument.
(1) The THD measurement at low frequency is limited by the test instrument.
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