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OPA2111SM Datasheet

  • OPA2111SM

  • Dual Low Noise Precision Difet OPERATIONAL AMPLIFIER

  • 13頁(yè)

  • BB

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OPA2111
Dual Low Noise Precision
Difet
OPERATIONAL AMPLIFIER
FEATURES
q
LOW NOISE: 100% Tested, 8nV/
鈭?/div>
Hz max at
10kHz
q
q
q
q
q
LOW BIAS CURRENT: 4pA max
LOW OFFSET: 500
V max
LOW DRIFT: 2.8
V/
C
HIGH OPEN-LOOP GAIN: 114dB min
HIGH COMMON-MODE REJECTION:
96dB min
APPLICATIONS
q
PRECISION INSTRUMENTATION
q
DATA ACQUISITION
q
TEST EQUIPMENT
q
PROFESSIONAL AUDIO EQUIPMENT
q
MEDICAL EQUIPMENT
q
DETECTOR ARRAYS
DESCRIPTION
The OPA2111 is a high precision monolithic
dielectrically isolated FET (
Difet
) operational ampli-
fier. Outstanding 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 cascode design
allows high precision input specifications and reduced
susceptibility to flicker noise.
Standard dual op amp pin configuration allows up-
grading of existing designs to higher performance
levels.
BIFET
National Semiconductor Corp.,
Difet
Burr-Brown Corp.
*Patented
OPA2111 Simplified Circuit
(Each Amplifier)
+V
CC
8
鈥揑n
+In
Noise-Free
Cascode*
Output
鈥揤
CC
4
International Airport Industrial Park 鈥?Mailing Address: PO Box 11400
Tel: (520) 746-1111 鈥?Twx: 910-952-1111 鈥?Cable: BBRCORP 鈥?/div>
漏 1984 Burr-Brown Corporation
鈥?Tucson, AZ 85734 鈥?Street Address: 6730 S. Tucson Blvd. 鈥?Tucson, AZ 85706
Telex: 066-6491 鈥?FAX: (520) 889-1510 鈥?Immediate Product Info: (800) 548-6132
PDS-540E
Printed in U.S.A. October, 1993

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