OPA111

Manufacturer Part NumberOPA111
DescriptionLow Noise Precision Difet OPERATIONAL AMPLIFIER
ManufacturerBurr-Brown
OPA111 datasheet
 


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®
Low Noise Precision Difet
OPERATIONAL AMPLIFIER
FEATURES
LOW NOISE: 100% Tested, 8nV Hz max
(10kHz)
LOW BIAS CURRENT: 1pA max
LOW OFFSET: 250 V max
LOW DRIFT: 1 V/ C max
HIGH OPEN-LOOP GAIN: 120dB min
HIGH COMMON-MODE REJECTION:
100dB min
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.
®
®
National Semiconductor Corp., Difet
BIFET
Burr-Brown Corp.
International Airport Industrial Park
Mailing Address: PO Box 11400
Tel: (520) 746-1111
Twx: 910-952-1111
Cable: BBRCORP
© 1984 Burr-Brown Corporation
APPLICATIONS
PRECISION INSTRUMENTATION
DATA ACQUISITION
TEST EQUIPMENT
OPTOELECTRONICS
MEDICAL EQUIPMENT—CAT SCANNER
RADIATION HARD EQUIPMENT
Case and
Substrate
8
–In
2
+In
3
Noise-Free Cascode
2k
10k
Trim
1
10k
Trim
5
2k
*Patented
Tucson, AZ 85734
• Street Address: 6730 S. Tucson Blvd.
Telex: 066-6491
FAX: (520) 889-1510
Immediate Product Info: (800) 548-6132
PDS-526K
OPA111
®
+V
CC
7
*
Output
6
2k
2k
–V
CC
4
• Tucson, AZ 85706
Printed in U.S.A. August, 1995