NSC LM837N, LM837MX, LM837M Datasheet

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 600Ω load, mak­ing it ideal for almost all digital audio, graphic equalizer,
preamplifiers, and professional audio applications. Its high
performance characteristics also make it suitable for instru­mentation applications where low noise is the key consider­ation.

The LM837 is internally compensated for unity gain opera­tion. It is pin compatible with most other standard quad op
amps and can therefore be used to upgrade existing sys­tems with little or no change.

Features

n High slew rate 10 V/µs (typ); 8 V/µs (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

>

600Ω

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 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.

Supply Voltage, V

CC/VEE

±

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

−40˚C to +85˚C

Storage Temperature Range, T

STG

−60˚C to +150˚C

Soldering Information

Dual-In-Line Package

Soldering (10 seconds) 260˚C

Small Outline Package

Vapor Phase (60 seconds) 215˚C

Infrared (15 seconds) 220˚C
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

=

25˚C, V

S

=

±

15V

Symbol Parameter Condition Min Typ Max Units

V

OS

Input Offset Voltage R

S

=

50Ω 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

=

2kΩ,V

OUT

=

±

10V 90 110 dB

V

OM

Output Voltage Swing R

L

=

2kΩ

±

12

±

13.5 V

R

L

=

600Ω

±

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, −15z−5 80 100 dB

I

S

Power Supply Current R

L

=

∞

, Four Amps 10 15 mA

AC Electrical Characteristics

T

A

=

25˚C, V

S

=

±

15V

Symbol Parameter Condition Min Typ Max Units

SR Slew Rate R

L

=

600Ω 8 10 V/µs

GBW Gain Bandwidth Product f=100 kHz, R

L

=

600Ω 15 25 MHz

Design Electrical Characteristics

T

A

=

25˚C, V

S

=

±

15V (Note 4)

Symbol Parameter Condition Min Typ Max Units

PBW Power Bandwidth V

O

=

25 V

P-P,RL

=

600Ω, THD

<

1

%

200 kHz

e

n1

Equivalent Input Noise Voltage JIS A, R

S

=

100Ω 0.5 µV

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

=

600Ω

0.0015

%

f

U

Zero Cross Frequency Open Loop 12 MHz

φ

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 µV/˚C

Note 1: Absolute Maximum Ratingsindicatelimits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is func­tional, but do not guarantee specific performance limits. Electrical Characteristics state DC andAC electrical specifications under particular test conditions which guar­antee 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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Design Electrical Characteristics (Continued)

Note 3: For operation at ambient temperatures above 25˚C, the device must be derated based on a 150˚C maximum junction temperature and a thermal resistance,

junction to ambient, as follows: LM837N, 90˚C/W; LM837M, 150˚C/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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