OPA27 OPA37 Texas Instruments TI pdf datasheet download

OPA27 OPA37

Ultra-Low Noise, Precision
OPERATIONAL AMPLIFIERS

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.

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