1

®

INA118

A

1

A

2

A

3

6

60k

Ω

60k

Ω

60k

Ω

60k

Ω

7

4

3

8

1

2

V

IN

V

IN

R

G

V+

V–

INA118

Ref

V

O

G = 1 +

50k

Ω

R

G

–

+

5

Over-Voltage

Protection

25k

Ω

25k

Ω

Over-Voltage

Protection

FEATURES

q LOW OFFSET VOLTAGE: 50

q LOW DRIFT: 0.5

q LOW INPUT BIAS CURRENT: 5nA max

q HIGH CMR: 110dB min

q INPUTS PROTECTED TO

q WIDE SUPPLY RANGE:

q LOW QUIESCENT CURRENT: 350

q 8-PIN PLASTIC DIP, SO-8

DESCRIPTION

The INA118 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 (70kHz at G = 100).

A single external resistor sets any gain from 1 to 10,000.

Internal input protection can withstand up to

±40V

without damage.

The INA118 is laser trimmed for very low offset voltage

(50

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

jection (110dB at G = 1000). It operates with power

supplies as low as

±1.35V, and quiescent current is only

350

µA—ideal for battery operated systems.

The INA118 is available in 8-pin plastic DIP,

and SO-8 surface-mount packages, specified for

the –40

°C to +85°C temperature range.

Precision, Low Power

INSTRUMENTATION AMPLIFIER

®

INA118

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

INA118

INA118

PDS-1199D

Printed in U.S.A. April, 1998

SBOS027