®
OPA
177
OPA177
OPA
177
Precision
OPERATIONAL AMPLIFIER
FEATURES
q
LOW OFFSET VOLTAGE: 25
µ
V max
q
LOW DRIFT: 0.3
µ
V/
°
C
q
HIGH OPEN-LOOP GAIN: 130dB min
q
LOW QUIESCENT CURRENT: 1.5mA typ
q
REPLACES INDUSTRY-STANDARD OP
AMPS: OP-07, OP-77, OP-177, AD707,
ETC.
APPLICATIONS
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PRECISION INSTRUMENTATION
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DATA ACQUISITION
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TEST EQUIPMENT
q
BRIDGE AMPLIFIER
q
THERMOCOUPLE AMPLIFIER
DESCRIPTION
The OPA177 precision bipolar op amp feature very
low offset voltage and drift. Laser-trimmed offset,
drift and input bias current virtually eliminate the need
for costly external trimming. The high performance
and low cost make them ideally suited to a wide range
of precision instrumentation.
The low quiescent current of the OPA177 dramati-
cally reduce warm-up drift and errors due to thermo-
V+
7
Trim
1
14kΩ
Trim
8
electric effects in input interconnections. It provides
an effective alternative to chopper-stabilized amplifi-
ers. The low noise of the OPA177 maintains accuracy.
OPA177 performance gradeouts are available. Pack-
aging options include 8-pin plastic DIP
and SO-8 surface-mount packages.
25Ω
V
O
6
30Ω
+In
3
500Ω
–In
2
500Ω
20µA
V–
4
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©
1990 Burr-Brown Corporation
PDS-1081E
Printed in U.S.A. August, 1997
SBOS008
BURR-BROWN [ BURR-BROWN CORPORATION ]
