LM6171
LM6171 High Speed Low Power Low Distortion Voltage Feedback Amplifier
Literature Number: SNOS745B
LM6171
High Speed Low Power Low Distortion Voltage Feedback
Amplifier
General Description
The LM6171 is a high speed unity-gain stable voltage feed-
back amplifier. It offers a high slew rate of 3600V/µs and a
unity-gain bandwidth of 100 MHz while consuming only 2.5
mA of supply current. The LM6171 has very impressive AC
and DC performance which is a great benefit for high speed
signal processing and video applications.
The ±15V power supplies allow for large signal swings and
give greater dynamic range and signal-to-noise ratio. The
LM6171 has high output current drive, low SFDR and THD,
ideal for ADC/DAC systems. The LM6171 is specified for
±5V operation for portable applications.
The LM6171 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: 3600V/µs
nWide Unity-Gain-Bandwidth Product: 100 MHz
n−3dB Frequency @A
V
= +2: 62 MHz
nLow Supply Current: 2.5 mA
nHigh CMRR: 110 dB
nHigh Open Loop Gain: 90 dB
nSpecified for ±15V and ±5V Operation
Applications
nMultimedia Broadcast Systems
nLine Drivers, Switchers
nVideo Amplifiers
nNTSC, PAL®and SECAM Systems
nADC/DAC Buffers
nHDTV Amplifiers
nPulse Amplifiers and Peak Detectors
nInstrumentation Amplifier
nActive Filters
Typical Performance Characteristics
Closed Loop Frequency Responsevs. Supply Voltage
(A
V
= +1)
Large Signal Pulse Response
A
V
= +1, V
S
=±15
01233605
01233609
VIP™is a trademark of National Semiconductor Corporation.
PAL®is a registered trademark of and used under licence from Advanced Micro Devices, Inc.
February 2003
LM6171 High Speed Low Power Low Distortion Voltage Feedback Amplifier
© 2003 National Semiconductor Corporation DS012336 www.national.com
Connection Diagram
8-Pin DIP/SO
01233601
Top View
Ordering Information
Package Temperature Range Transport Media NSC Drawing
Industrial
−40˚C to +85˚C
8-Pin LM6171AIN Rails N08E
Molded DIP LM6171BIN
8-Pin LM6171AIM, LM6171BIM Rails M08A
Small Outline LM6171AIMX, LM6171BIMX 2.5k Units Tape and Reel
LM6171
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) 2.5 kV
Supply Voltage (V
+
–V
−
) 36V
Differential Input Voltage ±10V
Common-Mode Voltage Range V
+
+0.3V to V
−
−0.3V
Input Current ±10mA
Output Short Circuit to Ground
(Note 3) Continuous
Storage Temperature Range −65˚C to +150˚C
Maximum Junction Temperature
(Note 4) 150˚C
Soldering Information
Infrared or Convection Reflow
(20 sec.) 235˚C
Wave Soldering Lead Temp
(10 sec.) 260˚C
Operating Ratings (Note 1)
Supply Voltage 5.5V ≤V
S
≤34V
Operating Temperature Range
LM6171AI, LM6171BI −40˚C to +85˚C
Thermal Resistance (θ
JA
)
N Package, 8-Pin Molded DIP 108˚C/W
M Package, 8-Pin Surface Mount 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
Typ LM6171AI LM6171BI
Symbol Parameter Conditions (Note 5) Limit Limit Units
(Note 6) (Note 6)
V
OS
Input Offset Voltage 1.5 3 6 mV
58max
TC V
OS
Input Offset Voltage Average Drift 6 µV/˚C
I
B
Input Bias Current 1 3 3 µA
44max
I
OS
Input Offset Current 0.03 2 2 µA
33max
R
IN
Input Resistance Common Mode 40 MΩ
Differential Mode 4.9
R
O
Open Loop 14 Ω
Output Resistance
CMRR Common Mode V
CM
=±10V 110 80 75 dB
Rejection Ratio 75 70 min
PSRR Power Supply V
S
=±15V to ±5V 95 85 80 dB
Rejection Ratio 80 75 min
V
CM
Input Common-Mode CMRR ≥60 dB ±13.5 V
Voltage Range
A
V
Large Signal Voltage R
L
=1kΩ90 80 80 dB
Gain (Note 7) 70 70 min
R
L
= 100Ω83 70 70 dB
60 60 min
V
O
Output Swing R
L
=1kΩ13.3 12.5 12.5 V
12 12 min
−13.3 −12.5 −12.5 V
−12 −12 max
R
L
= 100Ω11.6 9 9 V
8.5 8.5 min
−10.5 −9 −9 V
−8.5 −8.5 max
Continuous Output Current Sourcing, R
L
= 100Ω116 90 90 mA
(Open Loop) (Note 8) 85 85 min
LM6171
www.national.com3
±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
Typ LM6171AI LM6171BI
Symbol Parameter Conditions (Note 5) Limit Limit Units
(Note 6) (Note 6)
Sinking, R
L
= 100Ω105 90 90 mA
85 85 max
Continuous Output Current Sourcing, R
L
=10Ω100 mA
(in Linear Region) Sinking, R
L
=10Ω80 mA
I
SC
Output Short Sourcing 135 mA
Circuit Current Sinking 135 mA
I
S
Supply Current 2.5 4 4 mA
4.5 4.5 max
±15V AC 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
Typ LM6171AI LM6171BI
Symbol Parameter Conditions (Note 5) Limit Limit Units
(Note 6) (Note 6)
SR Slew Rate (Note 9) A
V
= +2, V
IN
=13V
PP
3600 V/µs
A
V
= +2, V
IN
=10V
PP
3000
GBW Unity Gain-Bandwidth Product 100 MHz
−3 dB Frequency A
V
= +1 160 MHz
A
V
= +2 62 MHz
φm Phase Margin 40 deg
t
s
Settling Time (0.1%) A
V
= −1, V
OUT
=±5V 48 ns
R
L
= 500Ω
Propagation Delay V
IN
=±5V, R
L
= 500Ω,6 ns
A
V
=−2
A
D
Differential Gain (Note 10) 0.03 %
φ
D
Differential Phase (Note 10) 0.5 deg
e
n
Input-Referred f = 1 kHz 12
Voltage Noise
i
n
Input-Referred f = 1 kHz 1
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 lim-
its apply at the temperature extremes
Typ LM6171AI LM6171BI
Symbol Parameter Conditions (Note 5) Limit Limit Units
(Note 6) (Note 6)
V
OS
Input Offset Voltage 1.2 3 6 mV
58max
TC V
OS
Input Offset Voltage 4 µV/˚C
Average Drift
I
B
Input Bias Current 1 2.5 2.5 µA
3.5 3.5 max
I
OS
Input Offset Current 0.03 1.5 1.5 µA
LM6171
www.national.com 4
±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 lim-
its apply at the temperature extremes
Typ LM6171AI LM6171BI
Symbol Parameter Conditions (Note 5) Limit Limit Units
(Note 6) (Note 6)
2.2 2.2 max
R
IN
Input Resistance Common Mode 40 MΩ
Differential Mode 4.9
R
O
Open Loop 14 Ω
Output Resistance
CMRR Common Mode V
CM
=±2.5V 105 80 75 dB
Rejection Ratio 75 70 min
PSRR Power Supply V
S
=±15V to ±5V 95 85 80 dB
Rejection Ratio 80 75 min
V
CM
Input Common-Mode CMRR ≥60 dB ±3.7 V
Voltage Range
A
V
Large Signal Voltage R
L
=1kΩ84 75 75 dB
Gain (Note 7) 65 65 min
R
L
= 100Ω80 70 70 dB
60 60 min
V
O
Output Swing R
L
=1kΩ3.5 3.2 3.2 V
33min
−3.4 −3.2 −3.2 V
−3 −3 max
R
L
= 100Ω3.2 2.8 2.8 V
2.5 2.5 min
−3.0 −2.8 −2.8 V
−2.5 −2.5 max
Continuous Output Current Sourcing, R
L
= 100Ω32 28 28 mA
(Open Loop) (Note 8) 25 25 min
Sinking, R
L
= 100Ω30 28 28 mA
25 25 max
I
SC
Output Short Sourcing 130 mA
Circuit Current Sinking 100 mA
I
S
Supply Current 2.3 3 3 mA
3.5 3.5 max
±5V AC 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 LM6171AI LM6171BI
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
750 V/µs
GBW Unity Gain-Bandwidth 70 MHz
Product
−3 dB Frequency A
V
= +1 130 MHz
A
V
=+2 45
φm Phase Margin 57 deg
t
s
Settling Time (0.1%) A
V
= −1, V
OUT
= +1V, 60 ns
R
L
= 500Ω
LM6171
www.national.com5
±5V AC 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 LM6171AI LM6171BI
Symbol Parameter Conditions (Note 5) Limit Limit Units
(Note 6) (Note 6)
Propagation Delay V
IN
=±1V, R
L
= 500Ω,8 ns
A
V
=−2
A
D
Differential Gain (Note 10) 0.04 %
φ
D
Differential Phase (Note 10) 0.7 deg
e
n
Input-Referred f = 1 kHz 11
Voltage Noise
i
n
Input-Referred f = 1 kHz 1
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: 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) −T
A)/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 the output swing with the 100Ωload resistor divided by that resistor.
Note 9: Slew rate is the average of the rising 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.
LM6171
www.national.com 6
Typical Performance Characteristics Unless otherwise noted, T
A
= 25˚C
Supply Current vs. Supply Voltage Supply Current vs. Temperature
01233620 01233621
Input Offset Voltage vs. Temperature Input Bias Current vs. Temperature
01233622 01233623
Input Offset Voltage vs. Common Mode Voltage Short Circuit Current vs. Temperature (Sourcing)
01233624 01233625
LM6171
www.national.com7
Typical Performance Characteristics Unless otherwise noted, T
A
= 25˚C (Continued)
Short Circuit Current vs. Temperature (Sinking) Output Voltage vs. Output Current
01233626 01233627
Output Voltage vs. Output Current CMRR vs. Frequency
01233628 01233629
PSRR vs. Frequency PSRR vs. Frequency
01233630 01233631
LM6171
www.national.com 8
Typical Performance Characteristics Unless otherwise noted, T
A
= 25˚C (Continued)
Open Loop Frequency Response Open Loop Frequency Response
01233632
01233633
Gain Bandwidth Product vs. Supply Voltage Gain Bandwidth Product vs. Load Capacitance
01233634 01233635
Large Signal Voltage Gain vs. Load Large Signal Voltage Gain vs. Load
01233636 01233637
LM6171
www.national.com9
Typical Performance Characteristics Unless otherwise noted, T
A
= 25˚C (Continued)
Input Voltage Noise vs. Frequency Input Voltage Noise vs. Frequency
01233638 01233639
Input Current Noise vs. Frequency Input Current Noise vs. Frequency
01233640 01233641
Slew Rate vs. Supply Voltage Slew Rate vs. Input Voltage
01233642 01233643
LM6171
www.national.com 10
Typical Performance Characteristics Unless otherwise noted, T
A
= 25˚C (Continued)
Slew Rate vs. Load Capacitance Open Loop Output Impedance vs. Frequency
01233644 01233645
Open Loop Output Impedance vs. Frequency
Large Signal Pulse Response
A
V
= −1, V
S
=±15V
01233646
01233647
Large Signal Pulse Response
A
V
= −1, V
S
=±5V
Large Signal Pulse Response
A
V
= +1, V
S
=±15V
01233648 01233649
LM6171
www.national.com11
Typical Performance Characteristics Unless otherwise noted, T
A
= 25˚C (Continued)
Large Signal Pulse Response
A
V
= +1, V
S
=±5V
Large Signal Pulse Response
A
V
= +2, V
S
=±15V
01233650 01233651
Large Signal Pulse Response
A
V
= +2, V
S
=±5V
Small Signal Pulse Response
A
V
= −1, V
S
=±15V
01233652 01233653
Small Signal Pulse Response
A
V
= −1, V
S
=±5V
Small Signal Pulse Response
A
V
= +1, V
S
=±15V
01233654 01233655
LM6171
www.national.com 12
Typical Performance Characteristics Unless otherwise noted, T
A
= 25˚C (Continued)
Small Signal Pulse Response
A
V
= +1, V
S
=±5V
Small Signal Pulse Response
A
V
= +2, V
S
=±15V
01233656 01233657
Small Signal Pulse Response
A
V
= +2, V
S
=±5V
Closed Loop Frequency Response vs. SupplyVoltage
(A
V
= +1)
01233658
01233659
Closed Loop Frequency Response vs. Supply Voltage
(A
V
= +2)
Closed Loop Frequency Response vs. Capacitive Load
(A
V
= +1)
01233660 01233661
LM6171
www.national.com13
Typical Performance Characteristics Unless otherwise noted, T
A
= 25˚C (Continued)
Closed Loop Frequency Response vs. Capacitive Load
(A
V
= +1)
Closed Loop Frequency Response vs. Capacitive Load
(A
V
= +2)
01233662 01233663
Closed Loop Frequency Response vs. Capacitive Load
(A
V
= +2) Total Harmonic Distortion vs. Frequency
01233664 01233665
Total Harmonic Distortion vs. Frequency Total Harmonic Distortion vs. Frequency
01233666 01233667
LM6171
www.national.com 14
Typical Performance Characteristics Unless otherwise noted, T
A
= 25˚C (Continued)
Total Harmonic Distortion vs. Frequency Undistorted Output Swing vs. Frequency
01233668 01233669
Undistorted Output Swing vs. Frequency Undistorted Output Swing vs. Frequency
01233670 01233671
Undistorted Output Swing vs. Frequency Total Power Dissipation vs. Ambient Temperature
01233672 01233673
LM6171
www.national.com15
LM6171 Simplified Schematic
01233610
Application Information
LM6171 PERFORMANCE DISCUSSION
The LM6171 is a high speed, unity-gain stable voltage feed-
back amplifier. It consumes only 2.5 mA supply current while
providing a gain-bandwidth product of 100 MHz and a slew
rate of 3600V/µs. It also has other great features such as low
differential gain and phase and high output current. The
LM6171 is a good choice in high speed circuits.
The LM6171 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
will couple with feedback capacitor and cause oscillation. As
a result, CFAs cannot be used in traditional op amp circuits
such as photodiode amplifiers, I-to-V converters and integra-
tors.
LM6171 CIRCUIT OPERATION
The class AB input stage in LM6171 is fully symmetrical and
has a similar slewing characteristic to the current feedback
amplifiers. In the LM6171 Simplfied 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.
LM6171 SLEW RATE CHARACTERISTIC
The slew rate of LM6171 is determined by the current avail-
able to charge and discharge an internal high impedance
node capacitor. The 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.
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 series resistor such as 1 kΩto the input of
LM6171, the bandwidth is reduced to help lower the over-
shoot.
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 and frustrating to have excessive ringing, oscilla-
tion 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 frequency perfor-
mance. 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.
Components Selection And Feedback Resistor
It is important in high speed applications to keep all compo-
nent leads short because wires are inductive at high fre-
quency. For discrete components, choose carbon
LM6171
www.national.com 16
Application Information (Continued)
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 LM6171, 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 LM6171, 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-
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.
01233611
FIGURE 1. Compensating for Input Capacitance
01233612
FIGURE 2. Power Supply Bypassing
01233614
FIGURE 3. Properly Terminated Signal
01233615
FIGURE 4. Improperly Terminated Signal
LM6171
www.national.com17
Application Information (Continued)
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 stablility 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 LM6171, a 50Ωisolation resistor is
recommended for initial evaluation. Figure 6 shows the
LM6171 driving a 200 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 P
D
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 LM6171 in a SO-8 package, the maxi-
mum power dissipation at 25˚C ambient temperature is
730 mW.
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
supply voltage and output voltage of the same
supply)
For example, the total power dissipated by the LM6171 with
V
S
=±15V and output voltage of 10V into 1 kΩload resistor
(one end tied to ground) is
P
D
=P
Q
+P
L
= (2.5 mA) x (30V) + (10 mA) x (15V − 10V)
=75mW+50mW
= 125 mW
APPLICATION CIRCUITS
Fast Instrumentation Amplifier
01233617
01233613
FIGURE 5. Isolation Resistor Used
to Drive Capacitive Load
01233616
FIGURE 6. The LM6171 Driving a 200 pF Load
with a 50ΩIsolation Resistor
LM6171
www.national.com 18
Application Information (Continued)
Multivibrator
01233618
Pulse Width Modulator
01233619
DESIGN KIT
A design kit is available for the LM6171. The design kit
contains:
•High Speed Evaluation Board
•LM6171 in 8-pin DIP Package
•LM6171 Datasheet
•Pspice Macromodel Diskette With the LM6171 Macro-
model
•An Amplifier Selection Guide
PITCH PACK
A pitch pack is available for the LM6171. The pitch pack
contains:
•High Speed Evaluation Board
•LM6171 in 8-pin DIP Package
•LM6171 Datasheet
•Pspice Macromodel Diskette With the LM6171 Macro-
model
Contact your local National Semiconductor sales office to
obtain a pitch pack.
LM6171
www.national.com19
Physical Dimensions inches (millimeters) unless otherwise noted
8-Pin Small Outline Package
NS Package Number M08A
8-Pin Molded DIP Package
NS Package Number N08E
LM6171
www.national.com 20
Notes
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.
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
Americas Customer
Support Center
Email: new.feedback@nsc.com
Tel: 1-800-272-9959
National Semiconductor
Europe Customer Support Center
Fax: +49 (0) 180-530 85 86
Email: europe.support@nsc.com
Deutsch Tel: +49 (0) 69 9508 6208
English Tel: +44 (0) 870 24 0 2171
Français Tel: +33 (0) 1 41 91 8790
National Semiconductor
Asia Pacific Customer
Support Center
Fax: +65-6250 4466
Email: ap.support@nsc.com
Tel: +65-6254 4466
National Semiconductor
Japan Customer Support Center
Fax: 81-3-5639-7507
Email: jpn.feedback@nsc.com
Tel: 81-3-5639-7560
www.national.com
LM6171 High Speed Low Power Low Distortion Voltage Feedback Amplifier
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.
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements,
and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should
obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are
sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.
TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard
warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where
mandated by government requirements, testing of all parameters of each product is not necessarily performed.
TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and
applications using TI components. To minimize the risks associated with customer products and applications, customers should provide
adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right,
or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information
published by TI regarding third-party products or services does not constitute a license from TI to use such products or services or a
warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual
property of the third party, or a license from TI under the patents or other intellectual property of TI.
Reproduction of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied
by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive
business practice. TI is not responsible or liable for such altered documentation. Information of third parties may be subject to additional
restrictions.
Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all
express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not
responsible or liable for any such statements.
TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would reasonably
be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement specifically governing
such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products
and any use of TI products in such safety-critical applications, notwithstanding any applications-related information or support that may be
provided by TI. Further, Buyers must fully indemnify TI and its representatives against any damages arising out of the use of TI products in
such safety-critical applications.
TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are
specifically designated by TI as military-grade or "enhanced plastic."Only products designated by TI as military-grade meet military
specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is solely at
the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in connection with such use.
TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products are
designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated
products in automotive applications, TI will not be responsible for any failure to meet such requirements.
Following are URLs where you can obtain information on other Texas Instruments products and application solutions:
Products Applications
Audio www.ti.com/audio Communications and Telecom www.ti.com/communications
Amplifiers amplifier.ti.com Computers and Peripherals www.ti.com/computers
Data Converters dataconverter.ti.com Consumer Electronics www.ti.com/consumer-apps
DLP®Products www.dlp.com Energy and Lighting www.ti.com/energy
DSP dsp.ti.com Industrial www.ti.com/industrial
Clocks and Timers www.ti.com/clocks Medical www.ti.com/medical
Interface interface.ti.com Security www.ti.com/security
Logic logic.ti.com Space, Avionics and Defense www.ti.com/space-avionics-defense
Power Mgmt power.ti.com Transportation and Automotive www.ti.com/automotive
Microcontrollers microcontroller.ti.com Video and Imaging www.ti.com/video
RFID www.ti-rfid.com
OMAP Mobile Processors www.ti.com/omap
Wireless Connectivity www.ti.com/wirelessconnectivity
TI E2E Community Home Page e2e.ti.com
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright ©2011, Texas Instruments Incorporated
