FEATURES

LOW NOISE: 4.5nV/√Hz max at 1kHz

LOW OFFSET: 100μV max

LOW DRIFT: 0.4μV/°C

HIGH OPEN-LOOP GAIN: 117dB min

HIGH COMMON-MODE REJECTION: 100dB min

HIGH POWER-SUPPLY REJECTION: 94dB min

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

SOCKETS

APPLICATIONS

PRECISION INSTRUMENTATION

DATA ACQUISITION

TEST EQUIPMENT

PROFESSIONAL AUDIO EQUIPMENT

TRANSDUCER AMPLIFIERS

RADIATION HARD EQUIPMENT

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.