LM837
Low Noise Quad Operational Amplifier
General Description
The LM837 is a quad operational amplifier designed for low
noise, high speed and wide bandwidth performance. It has a
new type of output stage which can drive a 600
load, mak-
ing it ideal for almost all digital audio, graphic equalizer,
preamplifiers, and professional audio applications. Its high
performance characteristics also make it suitable for instru-
mentation applications where low noise is the key consider-
ation.
The LM837 is internally compensated for unity gain opera-
tion. It is pin compatible with most other standard quad op
amps and can therefore be used to upgrade existing sys-
tems with little or no change.
Features
n
High slew rate
10 V/s (typ); 8 V/s (min)
n
Wide gain bandwidth product
25 MHz (typ); 15 MHz
(min)
n
Power bandwidth
200 kHz (typ)
n
High output current
40 mA
n
Excellent output drive performance
>
600
n
Low input noise voltage
4.5 nV/
n
Low total harmonic distortion
0.0015%
n
Low offset voltage
0.3 mV
Schematic and Connection Diagrams
DS009047-1
Dual-In-Line Package
DS009047-2
Top View
Order Number LM837M
or LM837N
See NS Package Number
M14A or N14A
May 1999
LM837
Low
Noise
Quad
Operational
Amplifier
1999 National Semiconductor Corporation
DS009047
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Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage, V
CC
/V
EE
18V
Differential Input Voltage, V
ID
(Note 2)
30V
Common Mode Input Voltage, V
IC
(Note 2)
15V
Power Dissipation, P
D
(Note 3)
1.2W (N)
830 mW (M)
Operating Temperature Range, T
OPR
-40C to +85C
Storage Temperature Range, T
STG
-60C to +150C
Soldering Information
Dual-In-Line Package
Soldering (10 seconds)
260C
Small Outline Package
Vapor Phase (60 seconds)
215C
Infrared (15 seconds)
220C
ESD rating to be determined.
See AN-450 "Surface Mounting Methods and Their Effect
on Product Reliability" for other methods of soldering
surface mount devices.
DC Electrical Characteristics
T
A
= 25C, V
S
=
15V
Symbol
Parameter
Condition
Min
Typ
Max
Units
V
OS
Input Offset Voltage
R
S
= 50
0.3
5
mV
I
OS
Input Offset Current
10
200
nA
I
B
Input Bias Current
500
1000
nA
A
V
Large Signal Voltage Gain
R
L
= 2 k
, V
OUT
=
10V
90
110
dB
V
OM
Output Voltage Swing
R
L
= 2 k
12
13.5
V
R
L
= 600
10
12.5
V
V
CM
Common Mode Input Voltage
12
14.0
V
CMRR
Common Mode Rejection Ratio
V
IN
=
12V
80
100
dB
PSRR
Power Supply Rejection Ratio
V
S
= 15
z
5, -15
z
-5
80
100
dB
I
S
Power Supply Current
R
L
=
, Four Amps
10
15
mA
AC Electrical Characteristics
T
A
= 25C, V
S
=
15V
Symbol
Parameter
Condition
Min
Typ
Max
Units
SR
Slew Rate
R
L
= 600
8
10
V/s
GBW
Gain Bandwidth Product
f = 100 kHz, R
L
= 600
15
25
MHz
Design Electrical Characteristics
T
A
= 25C, V
S
=
15V (Note 4)
Symbol
Parameter
Condition
Min
Typ
Max
Units
PBW
Power Bandwidth
V
O
= 25 V
P-P
, R
L
= 600
, THD
<
1%
200
kHz
e
n1
Equivalent Input Noise Voltage
JIS A, R
S
= 100
0.5
V
e
n2
Equivalent Input Noise Voltage
f = 1 kHz
4.5
nV/
i
n
Equivalent Input Noise Current
f = 1 kHz
0.7
pA/
THD
Total Harmonic Distortion
A
V
= 1, V
OUT
= 3 Vrms,
f = 20
z
20 kHz, R
L
= 600
0.0015
%
f
U
Zero Cross Frequency
Open Loop
12
MHz
m
Phase Margin
Open Loop
45
deg
Input-Referred Crosstalk
f = 20
z
20 kHz
-120
dB
V
OS
/
T
Average TC of Input Offset Voltage
2
V/C
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is func-
tional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guar-
antee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is
given, however, the typical value is a good indication of device performance.
Note 2: Unless otherwise specified the absolute maximum input voltage is equal to the power supply voltage.
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2
Design Electrical Characteristics
(Continued)
Note 3: For operation at ambient temperatures above 25C, the device must be derated based on a 150C maximum junction temperature and a thermal resistance,
junction to ambient, as follows: LM837N, 90C/W; LM837M, 150C/W.
Note 4: The following parameters are not tested or guaranteed.
Detailed Schematic
Typical Performance Characteristics
DS009047-3
Maximum Power Dissipation vs
Ambient Temperature
DS009047-10
Normalized Input Bias Current
vs Supply Voltage
DS009047-11
Normalized Input Bias Current
vs Ambient Temperature
DS009047-12
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Typical Performance Characteristics
(Continued)
Supply Current vs
Supply Voltage
DS009047-13
Supply Current vs
Ambient Temperature
DS009047-14
Positive Current Limit
DS009047-15
Negative Current Limit
DS009047-16
Maximum Output Voltage
vs Supply Voltage
DS009047-17
Maximum Output Voltage
vs Supply Voltage
DS009047-18
Maximum Output Voltage
vs Ambient Temperature
DS009047-19
Maximum Output Voltage
vs Ambient Temperature
DS009047-20
Power Bandwidth
DS009047-21
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Typical Performance Characteristics
(Continued)
Normalized Slew Rate &
Gain Bandwidth vs
Supply Voltage (f = 100 kHz)
DS009047-22
Normalized Slew Rate &
Gain Bandwidth (f = 100 kHz)
vs Ambient Temperature
DS009047-23
Voltage Gain vs
Supply Voltage
DS009047-24
Voltage Gain vs
Ambient Temperature
DS009047-25
Power Supply Rejection
vs Frequency
DS009047-26
CMRR vs Frequency
DS009047-27
Open Loop Gain &
Phase vs Frequency
DS009047-28
Total Harmonic Distortion
vs Frequency
DS009047-29
Equivalent Input Noise
Voltage vs Frequency
DS009047-30
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