®

INA111

1

©1992 Burr-Brown Corporation

PDS-1143E

Printed in U.S.A. March, 1998

INA111

A

1

A

2

A

3

(12)

(11)

6

(10)

10k

Ω

10k

Ω

25k

Ω

25k

Ω

10k

Ω

10k

Ω

(13)

7

(7)

4

(5)

3

(15)

8

(2)

1

(4)

2

V

IN

V

IN

R

G

V+

V–

INA111

DIP

(SOIC)

Ref

Feedback

V

O

G = 1 +

50k

Ω

R

G

–

+

5

DIP Connected

Internally

High Speed FET-Input

INSTRUMENTATION AMPLIFIER

FEATURES

q FET INPUT: I

B = 20pA max

q HIGH SPEED: T

S = 4µs (G = 100, 0.01%)

q LOW OFFSET VOLTAGE: 500

µV max

q LOW OFFSET VOLTAGE DRIFT:

5

µV/°C max

q HIGH COMMON-MODE REJECTION:

106dB min

q 8-PIN PLASTIC DIP, SOL-16 SOIC

APPLICATIONS

q MEDICAL INSTRUMENTATION

q DATA ACQUISITION

DESCRIPTION

The INA111 is a high speed, FET-input instrumenta-

tion amplifier offering excellent performance.

The INA111 uses a current-feedback topology provid-

ing extended bandwidth (2MHz at G = 10) and fast

settling time (4

µs to 0.01% at G = 100). A single

external resistor sets any gain from 1 to over 1000.

Offset voltage and drift are laser trimmed for excellent

DC accuracy. The INA111’s FET inputs reduce input

bias current to under 20pA, simplifying input filtering

and limiting circuitry.

The INA111 is available in 8-pin plastic DIP, and

SOL-16 surface-mount packages, specified for the

–40

°C to +85°C temperature range.

®

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

INA111

INA111

SBOS015