®

INA141

1

INA141

INA141

Precision, Low Power, G = 10, 100

INSTRUMENTATION AMPLIFIER

®

FEATURES

q LOW OFFSET VOLTAGE: 50

q LOW DRIFT: 0.5

q ACCURATE GAIN:

q LOW INPUT BIAS CURRENT: 5nA max

q HIGH CMR: 117dB min

q INPUTS PROTECTED TO

q WIDE SUPPLY RANGE:

q LOW QUIESCENT CURRENT: 750

q 8-PIN PLASTIC DIP, SO-8

DESCRIPTION

The INA141 is a low power, general purpose instru-

mentation amplifier offering excellent accuracy. Its

versatile 3-op amp design and small size make it ideal

for a wide range of applications. Current-feedback

input circuitry provides wide bandwidth even at high

gain (200kHz at G = 100).

Simple pin connections set an accurate gain of 10 or

100V/V without external resistors. Internal input pro-

tection can withstand up to

±40V without damage.

The INA141 is laser trimmed for very low offset

voltage (50

µV), drift (0.5µV/°C) and high common-

mode rejection (117dB at G = 100). It operates with

power supplies as low as

±2.25V, and quiescent

current is only 750

µA—ideal for battery operated

systems.

The INA141 is available in 8-pin plastic DIP, and

SO-8 surface-mount packages, specified for the –40

°C

to +85

°C temperature range.

INA141

A

1

A

2

A

3

40k

Ω

40k

Ω

40k

Ω

40k

Ω

V

IN

2

1

8

3

6

5

V

IN

V+

V–

INA141

Ref

V

O

–

+

Over-Voltage

Protection

25k

Ω

25k

Ω

Over-Voltage

Protection

4

7

G = 10

or

G =100

252

Ω

5050

Ω

252

Ω

APPLICATIONS

q BRIDGE AMPLIFIER

q THERMOCOUPLE AMPLIFIER

q RTD SENSOR AMPLIFIER

q MEDICAL INSTRUMENTATION

q DATA ACQUISITION

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/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132

PDS-1297B