OPA111 Datasheet, PDF (1/14 Pages) Burr-Brown (TI) – Low Noise Precision Difet OPERATIONAL AMPLIFIER

®
OPA111
SBOS138
Low Noise Precision Difet ^®
OPERATIONAL AMPLIFIER
FEATURES
q LOW NOISE: 100% Tested, 8nV√Hz max
(10kHz)
q LOW BIAS CURRENT: 1pA max
q LOW OFFSET: 250µV max
q LOW DRIFT: 1µV/°C max
q HIGH OPEN-LOOP GAIN: 120dB min
q HIGH COMMON-MODE REJECTION:
100dB min
APPLICATIONS
q PRECISION INSTRUMENTATION
q DATA ACQUISITION
q TEST EQUIPMENT
q OPTOELECTRONICS
q MEDICAL EQUIPMENT—CAT SCANNER
q RADIATION HARD EQUIPMENT
DESCRIPTION
The OPA111 is a precision monolithic dielectrically
isolated FET (Difet ^®) operational amplifier. Outstand-
ing performance characteristics allow its use in the
most critical instrumentation applications.
Noise, bias current, voltage offset, drift, open-loop
gain, common-mode rejection, and power supply re-
jection are superior to BIFET^® amplifiers.
Very low bias current is obtained by dielectric isola-
tion with on-chip guarding.
Laser trimming of thin-film resistors gives very low
offset and drift. Extremely low noise is achieved with
patented circuit design techniques. A new cascode
design allows high precision input specifications and
reduced susceptibility to flicker noise.
Standard 741 pin configuration allows upgrading of
existing designs to higher performance levels.
BIFET^® National Semiconductor Corp., Difet^® Burr-Brown Corp.
Case and
Substrate
8
–In
2
+In
3
Noise-Free Cascode^*
2kΩ
2kΩ
Trim ^10kΩ
1
Trim 10kΩ
5
2kΩ
2kΩ
*Patented
+V_CC
7
Output
6
–V_CC
4
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Tel: [phone] • Twx: 910-952-1111 • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]
© 1984 Burr-Brown Corporation
PDS-526K
Printed in U.S.A. August, 1995