Dual, Low Power, Single-Supply

DIFFERENCE AMPLIFIER

©1998 Burr-Brown Corporation

PDS-1488A

Printed in U.S.A. December, 1998

®

FEATURES

q DESIGNED FOR LOW COST

q LOW QUIESCENT CURRENT:

160

µA per Amplifier

q WIDE POWER SUPPLY RANGE:

Single Supply: 2.7V to 36V

Dual Supplies:

±1.35V to ±18V

q LOW GAIN ERROR:

±0.05% max

q LOW NONLINEARITY: 0.001% max

q HIGH CMRR: 90dB

q HIGHLY VERSATILE CIRCUIT

q EASY TO USE

q SO-14 PACKAGE

INA2132

DESCRIPTION

The INA2132 is a dual low power, unity-gain differ-

ence amplifier offering excellent value at very low

cost. Each channel consists of a precision op amp with

a laser-trimmed precision resistor network, providing

accurate gain and high common-mode rejection. Ex-

cellent TCR tracking of the resistors maintains gain

accuracy and common-mode rejection over tempera-

ture. The internal op amp’s common-mode range

extends to the negative supply—ideal for single-sup-

ply applications.

The difference amplifier is the foundation of many

commonly used circuits. The INA2132 provides this

circuit function without using an expensive precision

resistor network. The INA2132 is available in the

SO-14 surface-mount package and is specified for

operation over the extended industrial temperature

range, –40

°C to +85°C.

A single version of this product with similar specifi-

cations is also available. See the INA132 data sheet

for details.

APPLICATIONS

q DIFFERENTIAL INPUT AMPLIFIER

q INSTRUMENTATION AMPLIFIER

BUILDING BLOCK

q UNITY-GAIN INVERTING AMPLIFIER

q G = 1/2 AMPLIFIER

q G = 2 AMPLIFIER

q SUMMING AMPLIFIER

q DIFFERENTIAL CURRENT RECEIVER

q VOLTAGE-CONTROLLED CURRENT SOURCE

q BATTERY-POWERED SYSTEMS

q GROUND LOOP ELIMINATOR

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111

Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132

Sense A

INA2132

Out A

V+

Ref A

–In A

+In A

12

13

14

2

11

V–

4

3

40k

Ω

40k

Ω

40k

Ω

40k

Ω

40k

Ω

40k

Ω

40k

Ω

40k

Ω

B

A

Sense B

Out B

Ref B

–In B

+In B

10

9

8

6

5

INA2132

SBOS108