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LM7171 -
Very High Speed, High Output Current, Voltage Feedback Amplifier
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Features
(Typical Unless Otherwise Noted)
| • | Easy-to-use voltage feedback topology |
| • | Very high slew rate: 4100 V/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 |
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. More...
Applications
| • | 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 |
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Typical Application
*click for larger image
| Parameters | Values |
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| -3dB BW |
220 MHz |
| AvCL for -3dB BW |
2 V/V |
| Slew Rate |
4100 Volts/usec |
| Input OutputType |
Not Rail to Rail |
| Supply Min |
5.5 Volt |
| Supply Max |
36 Volt |
| Supply Current Per Channel |
6.5 mA |
| PowerWise Rating 2 |
32.5 uA/MHz |
| Channels |
1 Channels |
| Offset Voltage max, 25C |
1, 3 mV |
| Max Input Bias Current |
12000 nA |
| Output Current |
100 mA |
| Voltage Noise |
14 nV/root(Hz) |
| Shut down |
No |
| Feedback Type |
Voltage |
| Av+1 BW |
Undefined MHz |
| Av+2 BW |
220 MHz |
| Av+5 BW |
100 MHz |
| Av+10 BW |
20 MHz |
| Av+20 BW |
10 MHz |
| HD 2nd |
-75 dB |
| HD 3rd |
-55 dB |
| Diff Gain |
0.01 dB |
| Diff Phase |
0.02 % |
| Settling Time |
42 ns |
| Tsettling Conditions |
to 0.1% |
| Special Features |
AvCl>2 |
| Function |
Op Amp |
| Gain Bandwidth |
200 MHz |
| Temperature Min |
-40, -55 deg C |
| Temperature Max |
125, 85 deg C |
Typical Performance
*click for larger image
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WEBENCH Live Simulation!
Also Recommended
| LMH6672▲ | Lower Distortion, Higher Current |
Additional Resources
Online Seminars
Design Tools
Connection Diagram
*click for larger image
*click for larger image
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Datasheet
RoHS Compliance Information
| Size in Kbytes | Date |
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| LM7171 Very High Speed, High Output Current, Voltage Feedback Amplifier |
1056
Kbytes |
30-May-06 |
Download |
LM7171 Very High Speed, High Output Current, Voltage Feedback Amplifier (Japanese)
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978 Kbytes |
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Package Availability, Models, Samples & Pricing
| Obsolete Part | Alternate Part or
Supplier | Source | Last Time Buy Date |
LM7171A MDC
| NONE
| NATIONAL SEMICONDUCTOR
| 03 Dec 2008
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LM7171A MWC
| NONE
| NATIONAL SEMICONDUCTOR
| 03 Dec 2008
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LM7171AIN
| EL2073
| ELANTEC INC
| 16 Nov 2008
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LM7171AIWM
| NONE
| NONE
| 03 Sep 2002
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LM7171AIWMX
| NONE
| NONE
| 03 Sep 2002
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LM7171AMJ-MLS
| LM7171AMJFQMLV
| NATIONAL SEMICONDUCTOR
| 03 Dec 2008
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LM7171AMJ-MPR
| NONE
| NONE
| 01 Sep 2004
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LM7171AMJ-QMLV
| LM7171AMJFQMLV
| NATIONAL SEMICONDUCTOR
| 03 Dec 2008
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LM7171AMJFQML
| LM7171AMJFQMLV
| NATIONAL SEMICONDUCTOR
| 03 Dec 2008
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LM7171AMW-MLS
| LM7171AMW-QMLV
| NSC
| 05 Mar 2008
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LM7171AMW-QMLV
| LM7171AMJFQMLV
| NSCE
| 03 Dec 2008
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LM7171AMWG-QMLV
| LM7171AMJFQMLV
| NATIONAL SEMICONDUCTOR
| 03 Dec 2008
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LM7171AMWGFQML
| LM7171AMJFQMLV
| NATIONAL SEMICONDUCTOR
| 03 Dec 2008
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LM7171BIWM
| NONE
| NONE
| 03 Sep 2002
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LM7171BIWMX
| NONE
| NONE
| 03 Sep 2002
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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.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
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LM7171AIM | VIP III | 0 | 15575 | 0 | 0 | 1212500 | 3 | 344050185
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LM7171AIMX | VIP III | 0 | 15575 | 0 | 0 | 1212500 | 3 | 344050185
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LM7171AMWGFQML | VIP III | 0 | 15575 | 0 | 0 | 1212500 | 3 | 344050185
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LM7171BIM | VIP III | 0 | 15575 | 0 | 0 | 1212500 | 3 | 344050185
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LM7171BIMX | VIP III | 0 | 15575 | 0 | 0 | 1212500 | 3 | 344050185
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LM7171BIN | VIP III | 0 | 15575 | 0 | 0 | 1212500 | 3 | 344050185
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Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR.
The Long Term Failure Rates were calculated
at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress
temperature of 150°C to an application temperature of 55°C.
For more information on Reliability Metrics, please click here.
Design Tools
| Title | Size in Kbytes |
Date |
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| Amplifiers Selection Guide software for Windows |
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View |
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[Information as of 8-Nov-2009]
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