LM7171
LM7171 Very High Speed, High Output Current, Voltage Feedback Amplifier
Literature Number: SNOS760A
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 ampli-
fier; 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 consum-
ing 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 (Verti-
cally integrated PNP) complementary bipolar process.
Features
(Typical Unless Otherwise Noted)
nEasy-to-use voltage feedback topology
nVery high slew rate: 4100 V/µs
nWide unity-gain bandwidth: 200 MHz
n−3 dB frequency @A
V
= +2: 220 MHz
nLow supply current: 6.5 mA
nHigh open loop gain: 85 dB
nHigh output current: 100 mA
nDifferential gain and phase: 0.01%, 0.02˚
nSpecified for ±15V and ±5V operation
Applications
nHDSL and ADSL drivers
nMultimedia broadcast systems
nProfessional video cameras
nVideo amplifiers
nCopiers/scanners/fax
nHDTV amplifiers
nPulse amplifiers and peak detectors
nCATV/fiber optics signal processing
Typical Performance
Large Signal Pulse Response
A
V
= +2, V
S
=±15V
01238501
VIP™is a trademark of National Semiconductor Corporation.
May 2006
LM7171 Very High Speed, High Output Current, Voltage Feedback Amplifier
© 2006 National Semiconductor Corporation DS012385 www.national.com
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) 2.5 kV
Supply Voltage (V
+
–V
−
) 36V
Differential Input Voltage (Note 11) ±10V
Output Short Circuit to Ground
(Note 3) Continuous
Storage Temperature Range −65˚C to +150˚C
Maximum Junction Temperature
(Note 4) 150˚C
Operating Ratings (Note 1)
Supply Voltage 5.5V ≤V
S
≤36V
Junction Temperature Range
LM7171AI, LM7171BI −40˚C ≤T
J
≤+85˚C
Thermal Resistance (θ
JA
)
8-Pin MDIP 108˚C/W
8-Pin SOIC 172˚C/W
±15V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= +15V, V
−
= −15V, V
CM
= 0V, and R
L
=1kΩ.Boldface
limits apply at the temperature extremes
Symbol Parameter Conditions Typ
(Note 5)
LM7171AI LM7171BI Units
Limit Limit
(Note 6) (Note 6)
V
OS
Input Offset Voltage 0.2 1 3 mV
47max
TC V
OS
Input Offset Voltage 35 µV/˚C
Average Drift
I
B
Input Bias Current 2.7 10 10 µA
12 12 max
I
OS
Input Offset Current 0.1 4 4 µA
66max
R
IN
Input Resistance Common Mode 40 MΩ
Differential Mode 3.3
R
O
Open Loop Output 15 Ω
Resistance
CMRR Common Mode V
CM
=±10V 105 85 75 dB
Rejection Ratio 80 70 min
PSRR Power Supply V
S
=±15V to ±5V 90 85 75 dB
Rejection Ratio 80 70 min
V
CM
Input Common-Mode CMRR >60 dB ±13.35 V
Voltage Range
A
V
Large Signal Voltage R
L
=1kΩ85 80 75 dB
Gain (Note 7) 75 70 min
R
L
= 100Ω81 75 70 dB
70 66 min
V
O
Output Swing R
L
=1kΩ13.3 13 13 V
12.7 12.7 min
−13.2 −13 −13 V
−12.7 −12.7 max
R
L
= 100Ω11.8 10.5 10.5 V
9.5 9.5 min
−10.5 −9.5 −9.5 V
−9 −9 max
Output Current Sourcing, R
L
= 100Ω118 105 105 mA
(Open Loop) 95 95 min
(Note 8) Sinking, R
L
= 100Ω105 95 95 mA
90 90 max
LM7171
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±15V DC Electrical Characteristics (Continued)
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= +15V, V
−
= −15V, V
CM
= 0V, and R
L
=1kΩ.Boldface
limits apply at the temperature extremes
Symbol Parameter Conditions Typ
(Note 5)
LM7171AI LM7171BI Units
Limit Limit
(Note 6) (Note 6)
Output Current Sourcing, R
L
= 100Ω100 mA
(in Linear Region) Sinking, R
L
= 100Ω100
I
SC
Output Short Circuit Sourcing 140 mA
Current Sinking 135
I
S
Supply Current 6.5 8.5 8.5 mA
9.5 9.5 max
±15V AC Electrical Characteristics
Unless otherwise specified, T
J
= 25˚C, V
+
= +15V, V
−
= −15V, V
CM
= 0V, and R
L
=1kΩ.
Typ LM7171AI LM7171BI
Symbol Parameter Conditions (Note 5) Limit Limit Units
(Note 6) (Note 6)
SR Slew Rate (Note 9) A
V
= +2, V
IN
=13V
PP
4100 V/µs
A
V
= +2, V
IN
=10V
PP
3100
Unity-Gain Bandwidth 200 MHz
−3 dB Frequency A
V
= +2 220 MHz
φ
m
Phase Margin 50 Deg
t
s
Settling Time (0.1%) A
V
= −1, V
O
=±5V 42 ns
R
L
= 500Ω
t
p
Propagation Delay A
V
= −2, V
IN
=±5V, 5 ns
R
L
= 500Ω
A
D
Differential Gain (Note 10) 0.01 %
φ
D
Differential Phase (Note 10) 0.02 Deg
Second Harmonic (Note 12) f
IN
= 10 kHz −110 dBc
f
IN
= 5 MHz −75 dBc
Third Harmonic (Note 12) f
IN
= 10 kHz −115 dBc
f
IN
= 5 MHz −55 dBc
e
n
Input-Referred f = 10 kHz 14
Voltage Noise
i
n
Input-Referred f = 10 kHz 1.5
Current Noise
±5V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= +5V, V
−
= −5V, V
CM
= 0V, and R
L
=1kΩ.Boldface limits
apply at the temperature extremes
Typ LM7171AI LM7171BI
Symbol Parameter Conditions (Note 5) Limit Limit Units
(Note 6) (Note 6)
V
OS
Input Offset Voltage 0.3 1.5 3.5 mV
47max
TC V
OS
Input Offset Voltage 35 µV/˚C
Average Drift
I
B
Input Bias Current 3.3 10 10 µA
12 12 max
I
OS
Input Offset Current 0.1 4 4 µA
LM7171
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±5V DC Electrical Characteristics (Continued)
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= +5V, V
−
= −5V, V
CM
= 0V, and R
L
=1kΩ.Boldface limits
apply at the temperature extremes
Typ LM7171AI LM7171BI
Symbol Parameter Conditions (Note 5) Limit Limit Units
(Note 6) (Note 6)
66max
R
IN
Input Resistance Common Mode 40 MΩ
Differential Mode 3.3
R
O
Output Resistance 15 Ω
CMRR Common Mode V
CM
=±2.5V 104 80 70 dB
Rejection Ratio 75 65 min
PSRR Power Supply V
S
=±15V to ±5V 90 85 75 dB
Rejection Ratio 80 70 min
V
CM
Input Common-Mode CMRR >60 dB ±3.2 V
Voltage Range
A
V
Large Signal Voltage R
L
=1kΩ78 75 70 dB
Gain (Note 7) 70 65 min
R
L
= 100Ω76 72 68 dB
67 63 min
V
O
Output Swing R
L
=1kΩ3.4 3.2 3.2 V
33min
−3.4 −3.2 −3.2 V
−3 −3 max
R
L
= 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 Sourcing, R
L
= 100Ω31 29 29 mA
(Open Loop) (Note 8) 28 28 min
Sinking, R
L
= 100Ω30 29 29 mA
28 28 max
I
SC
Output Short Circuit Sourcing 135 mA
Current Sinking 100
I
S
Supply Current 6.2 8 8 mA
99max
±5V AC Electrical Characteristics
Unless otherwise specified, T
J
= 25˚C, V
+
= +5V, V
−
= −5V, V
CM
= 0V, and R
L
=1kΩ.
Typ LM7171AI LM7171BI
Symbol Parameter Conditions (Note 5) Limit Limit Units
(Note 6) (Note 6)
SR Slew Rate (Note 9) A
V
= +2, V
IN
= 3.5 V
PP
950 V/µs
Unity-Gain Bandwidth 125 MHz
−3 dB Frequency A
V
= +2 140 MHz
φ
m
Phase Margin 57 Deg
t
s
Settling Time (0.1%) A
V
= −1, V
O
=±1V, 56 ns
R
L
= 500Ω
t
p
Propagation Delay A
V
= −2, V
IN
=±1V, 6 ns
R
L
= 500Ω
A
D
Differential Gain (Note 1) 0.02 %
φ
D
Differential Phase (Note 10) 0.03 Deg
LM7171
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±5V AC Electrical Characteristics (Continued)
Unless otherwise specified, T
J
= 25˚C, V
+
= +5V, V
−
= −5V, V
CM
= 0V, and R
L
=1kΩ.
Typ LM7171AI LM7171BI
Symbol Parameter Conditions (Note 5) Limit Limit Units
(Note 6) (Note 6)
Second Harmonic (Note 12) f
IN
= 10 kHz −102 dBc
f
IN
= 5 MHz −70 dBc
Third Harmonic (Note 12) f
IN
= 10 kHz −110 dBc
f
IN
= 5 MHz −51 dBc
e
n
Input-Referred f = 10 kHz 14
Voltage Noise
i
n
Input-Referred f = 10 kHz 1.8
Current Noise
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 kΩin 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: Typical 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 100Ωoutput 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 =1V
PP at 3.58 MHz and both input and output 75Ωterminated.
Note 11: Input differential voltage is applied at VS=±15V.
Note 12: Harmonics are measured with VIN =1V
PP,A
V= +2 and RL= 100Ω.
Note 13: The THD measurement at low frequency is limited by the test instrument.
Connection Diagram
8-Pin DIP/SO
01238502
Top View
Ordering Information
Package Temperature Range Transport
Media
NSC
Drawing
Industrial Military
−40˚C to +85˚C −55˚C to +125˚C
8-Pin SOIC
LM7171AIM Rails
M08A
LM7171AIMX Tape and Reel
LM7171BIM Rails
LM7171BIMX Tape and Reel
8-Pin MDIP LM7171AIN Rails N08E
LM7171BIN Rails
LM7171
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Typical Performance Characteristics unless otherwise noted, T
A
= 25˚C
Supply Current vs. Supply Voltage Supply Current vs. Temperature
01238563 01238564
Input Offset Voltage vs. Temperature Input Bias Current vs. Temperature
01238565 01238566
Short Circuit Current vs. Temperature (Sourcing) Short Circuit Current vs. Temperature (Sinking)
01238567 01238568
LM7171
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Typical Performance Characteristics unless otherwise noted, T
A
= 25˚C (Continued)
Output Voltage vs. Output Current Output Voltage vs. Output Current
01238569 01238570
CMRR vs. Frequency PSRR vs. Frequency
01238571 01238572
PSRR vs. Frequency Open Loop Frequency Response
01238573 01238551
LM7171
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Typical Performance Characteristics unless otherwise noted, T
A
= 25˚C (Continued)
Open Loop Frequency Response Gain-Bandwidth Product vs. Supply Voltage
01238552 01238553
Gain-Bandwidth Product vs. Load Capacitance Large Signal Voltage Gain vs. Load
01238554 01238555
Large Signal Voltage Gain vs. Load Input Voltage Noise vs. Frequency
01238556 01238557
LM7171
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Typical Performance Characteristics unless otherwise noted, T
A
= 25˚C (Continued)
Input Voltage Noise vs. Frequency Input Current Noise vs. Frequency
01238558 01238559
Input Current Noise vs. Frequency Slew Rate vs. Supply Voltage
01238560 01238561
Slew Rate vs. Input Voltage Slew Rate vs. Load Capacitance
01238562 01238523
LM7171
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Typical Performance Characteristics unless otherwise noted, T
A
= 25˚C (Continued)
Open Loop Output Impedance vs. Frequency Open Loop Output Impedance vs Frequency
01238525 01238526
Large Signal Pulse Response
A
V
= −1, V
S
=±15V
Large Signal Pulse Response
A
V
= −1, V
S
=±5V
01238527 01238528
Large Signal Pulse Response
A
V
= +2, V
S
=±15V
Large Signal Pulse Response
A
V
= +2, V
S
=±5V
01238529 01238530
LM7171
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Typical Performance Characteristics unless otherwise noted, T
A
= 25˚C (Continued)
Small Signal Pulse Response
A
V
= −1, V
S
=±15V
Small Signal Pulse Response
A
V
= −1, V
S
=±5V
01238531 01238532
Small Signal Pulse Response
A
V
= +2, V
S
=±15V
Small Signal Pulse Response
A
V
= +2, V
S
=±5V
01238533 01238534
Closed Loop Frequency Response vs. Supply Voltage
(A
V
= +2)
Closed Loop Frequency Response vs. Capacitive Load
(A
V
= +2)
01238535 01238536
LM7171
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Typical Performance Characteristics unless otherwise noted, T
A
= 25˚C (Continued)
Closed Loop Frequency Response vs. Capacitive Load
(A
V
= +2)
Closed Loop Frequency Response vs. Input Signal Level
(A
V
= +2)
01238537 01238538
Closed Loop Frequency Response vs. Input Signal Level
(A
V
= +2)
Closed Loop Frequency Response vs. Input Signal Level
(A
V
= +2)
01238543 01238539
Closed Loop Frequency Response vs. Input Signal Level
(A
V
= +2)
Closed Loop Frequency Response vs. Input Signal Level
(A
V
= +4)
01238540 01238544
LM7171
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Typical Performance Characteristics unless otherwise noted, T
A
= 25˚C (Continued)
Closed Loop Frequency Response vs. Input Signal Level
(A
V
= +4)
Closed Loop Frequency Response vs. Input Signal Level
(A
V
= +4)
01238545 01238541
Closed Loop Frequency Response vs. Input Signal Level
(A
V
= +4) Total Harmonic Distortion vs. Frequency (Note 13)
01238542 01238546
Total Harmonic Distortion vs. Frequency (Note 13) Undistorted Output Swing vs. Frequency
01238547 01238549
LM7171
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Typical Performance Characteristics unless otherwise noted, T
A
= 25˚C (Continued)
Undistorted Output Swing vs. Frequency Undistorted Output Swing vs. Frequency
01238548 01238550
Harmonic Distortion vs. Frequency (Note 13) Harmonic Distortion vs. Frequency (Note 13)
01238574 01238575
Maximum Power Dissipation vs. Ambient Temperature
01238520
LM7171
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Simplified Schematic Diagram
01238509
Note: M1 and M2 are current mirrors.
LM7171
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Application Notes
PERFORMANCE DISCUSSION
The LM7171 is a very high speed, voltage feedback ampli-
fier. 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 im-
pedance nodes. The low impedance inverting input in 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.
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,
R
E
the equivalent of the feedback resistor, and stage A
buffers the inverting input. The triple-buffered output stage
isolates the gain stage from the load to provide low output
impedance.
SLEW RATE CHARACTERISTIC
The slew rate of LM7171 is determined by the current avail-
able to charge and discharge an internal high impedance
node capacitor. This current is the differential input voltage
divided by the total degeneration resistor R
E
. Therefore, the
slew rate is proportional to the input voltage level, and the
higher slew rates are achievable in the lower gain configu-
rations. 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 plac-
ing an external resistor such as 1 kΩin series with the input
of LM7171, the bandwidth is reduced to help lower the
overshoot.
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 A
V
= +2 and A
V
= +4 versus input
signal levels. For the A
V
= +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 A
V
= +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.
LAYOUT CONSIDERATION
Printed Circuit Board 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.
Component Selection and Feedback Resistor
It is important in high speed applications to keep all compo-
nent leads short. For discrete components, choose carbon
composition-type resistors and mica-type capacitors. Sur-
face mount components are preferred over discrete compo-
nents 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 feed-
back resistor of 510Ωgives 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
C
F
>(R
G
xC
IN
)/R
F
can be used to cancel that pole. For LM7171, a feedback
capacitor of 2 pF is recommended. Figure 1 illustrates the
compensation circuit.
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 individu-
01238510
FIGURE 1. Compensating for Input Capacitance
LM7171
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Application Notes (Continued)
ally by placing 0.01 µF ceramic capacitors directly to power
supply pins and 2.2 µF tantalum capacitors close to the
power supply pins.
TERMINATION
In high frequency applications, reflections occur if signals
are not properly terminated. Figure 3 shows a properly ter-
minated signal while Figure 4 shows an improperly termi-
nated signal.
To minimize reflection, coaxial cable with matching charac-
teristic 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 75Ωcharacteristic impedance, and RG58 has
50Ωcharacteristic impedance.
DRIVING CAPACITIVE LOADS
Amplifiers driving capacitive loads can oscillate or have ring-
ing 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 perfor-
mance depends on the value of the isolation resistor; the
bigger the isolation resistor, the more damped the pulse
response becomes. For LM7171, a 50Ωisolation resistor is
recommended for initial evaluation. Figure 6 shows the
LM7171 driving a 150 pF load with the 50Ωisolation resistor.
POWER DISSIPATION
The maximum power allowed to dissipate in a device is
defined as:
P
D
=(T
J(MAX)
−T
A
)/θ
JA
Where
PD is the power dissipation in a device
T
J(max)
is the maximum junction temperature
T
A
is the ambient temperature
θ
JA
is the thermal resistance of a particular package
For example, for the LM7171 in a SO-8 package, the maxi-
mum power dissipation at 25˚C ambient temperature is
730 mW.
01238511
FIGURE 2. Power Supply Bypassing
01238517
FIGURE 3. Properly Terminated Signal
01238518
FIGURE 4. Improperly Terminated Signal
01238512
FIGURE 5. Isolation Resistor Used
to Drive Capacitive Load
01238513
FIGURE 6. The LM7171 Driving a 150 pF Load
with a 50ΩIsolation Resistor
LM7171
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Application Notes (Continued)
Thermal resistance, θ
JA
, depends on parameters such as
die size, package size and package material. The smaller
the die size and package, the higher θ
JA
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:
P
D
=P
Q
+P
L
P
Q
is the quiescent power dissipated in a device with no load
connected at the output. P
L
is the power dissipated in the
device with a load connected at the output; it is not the power
dissipated by the load.
Furthermore,
P
Q
: = supply current x total supply voltage with no load
P
L
: = output current x (voltage difference between sup-
ply voltage and output voltage of the same side of
supply voltage)
For example, the total power dissipated by the LM7171 with
V
S
=±15V and output voltage of 10V into 1 kΩis
P
D
=P
Q
+P
L
= (6.5 mA) x (30V) + (10 mA) x (15V − 10V)
=195mW+50mW
= 245 mW
Application Circuit
Fast Instrumentation Amplifier
01238514
01238580
Multivibrator
01238515
01238581
Pulse Width Modulator
01238516
Video Line Driver
01238521
LM7171
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Physical Dimensions inches (millimeters) unless otherwise noted
8-Pin SOIC
NS Package Number M08A
8-Pin MDIP
NS Package Number N08E
LM7171
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Notes
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.
For the most current product information visit us at www.national.com.
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LM7171 Very High Speed, High Output Current, Voltage Feedback Amplifier
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