OPA128 Burr-Brown, OPA128 Datasheet
OPA128
Manufacturer Part Number
OPA128
Description
Difet Electrometer-Grade OPERATIONAL AMPLIFIER
Manufacturer
Burr-Brown
Datasheet
1.OPA128.pdf
(9 pages)
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Price
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FEATURES
DESCRIPTION
The OPA128 is an ultra-low bias current monolithic
operational amplifier. Using advanced geometry
dielectrically-isolated FET ( Difet
lithic amplifier achieves a performance level exceed-
ing even the best hybrid electrometer amplifiers.
Laser-trimmed thin-film resistors give outstanding volt-
age offset and drift performance.
A noise-free cascode and low-noise processing give
the OPA128 excellent low-level signal handling capa-
bilities. Flicker noise is very low.
The OPA128 is an improved pin-for-pin replacement
for the AD515.
Difet
©
1986 Burr-Brown Corporation
ULTRA-LOW BIAS CURRENT: 75fA max
LOW OFFSET: 500 V max
LOW DRIFT: 5 V/ C max
HIGH OPEN-LOOP GAIN: 110dB min
HIGH COMMON-MODE REJECTION:
90dB min
IMPROVED REPLACEMENT FOR AD515
AND AD549
International Airport Industrial Park
®
Tel: (520) 746-1111
Burr-Brown Corp.
•
Twx: 910-952-1111
OPERATIONAL AMPLIFIER
Difet
•
®
Mailing Address: PO Box 11400
®
) inputs, this mono-
•
Cable: BBRCORP
®
Electrometer-Grade
PDS-653E
•
•
Telex: 066-6491
Tucson, AZ 85734
APPLICATIONS
Trim
Trim
Case (Guard)
–In
+In
3
8
2
1
5
ELECTROMETER
MASS SPECTROMETER
CHROMATOGRAPH
ION GAUGE
PHOTODETECTOR
RADIATION-HARD EQUIPMENT
1k
1k
•
FAX: (520) 889-1510
• Street Address: 6730 S. Tucson Blvd.
Noise-Free
Cascode
28k
2k
OPA128 Simplified Circuit
28k
2k
•
Immediate Product Info: (800) 548-6132
Printed in U.S.A. May, 1995
OPA128
• Tucson, AZ 85706
Output
–V
+V
7
6
4
CC
CC
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