FEATURES

q LOW NOISE: 4.5nV/

q LOW OFFSET: 100

q LOW DRIFT: 0.4

q HIGH OPEN-LOOP GAIN: 117dB min

q HIGH COMMON-MODE REJECTION: 100dB min

q HIGH POWER-SUPPLY REJECTION: 94dB min

q FITS OP-07, OP-05, AD510, AND AD517

SOCKETS

Ultra-Low Noise, Precision

OPERATIONAL AMPLIFIERS

APPLICATIONS

q PRECISION INSTRUMENTATION

q DATA ACQUISITION

q TEST EQUIPMENT

q PROFESSIONAL AUDIO EQUIPMENT

q TRANSDUCER AMPLIFIERS

q RADIATION HARD EQUIPMENT

OPA27

OPA37

OPA27

OPA2

7

SBOS135C – JANUARY 1984 – REVISED AUGUST 2005

DESCRIPTION

The OPA27 and OPA37 are ultra-low noise, high-precision

monolithic operational amplifiers.

Laser-trimmed thin-film resistors provide excellent long-term

voltage offset stability and allow superior voltage offset

compared to common zener-zap techniques.

A unique bias current cancellation circuit allows bias and

offset current specifications to be met over the full –40

°C to

+85

°C temperature range.

The OPA27 is internally compensated for unity-gain stability.

The decompensated OPA37 requires a closed-loop gain

≥ 5.

The Texas Instruments’ OPA27 and OPA37 are improved

replacements for the industry-standard OP-27 and OP-37.

www.ti.com

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Copyright © 1984-2005, Texas Instruments Incorporated

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

Output

+V

CC

–V

CC

+In

–In

Trim

Trim

8

7

6

4

1

2

3