OPA
27
OPA
27
OPA27
OPA37
SBOS135C – JANUARY 1984 – REVISED AUGUST 2005
Ultra-Low Noise, Precision
OPERATIONAL AMPLIFIERS
FEATURES
q
LOW NOISE: 4.5nV/
√
Hz max at 1kHz
q
LOW OFFSET: 100
µ
V max
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LOW DRIFT: 0.4
µ
V/
°
C
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HIGH OPEN-LOOP GAIN: 117dB min
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HIGH COMMON-MODE REJECTION: 100dB min
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HIGH POWER-SUPPLY REJECTION: 94dB min
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FITS OP-07, OP-05, AD510, AND AD517
SOCKETS
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.
APPLICATIONS
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q
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PRECISION INSTRUMENTATION
DATA ACQUISITION
TEST EQUIPMENT
PROFESSIONAL AUDIO EQUIPMENT
TRANSDUCER AMPLIFIERS
RADIATION HARD EQUIPMENT
7
+V
CC
8
Trim
1
Trim
6
Output
2
–In
3
+In
4
–V
CC
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.
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
www.ti.com
TI [ TEXAS INSTRUMENTS ]
