Datasheet
©
1990 Burr-Brown Corporation PDS-1081E Printed in U.S.A. August, 1997
OPA177
FEATURES
● LOW OFFSET VOLTAGE: 25µV max
● LOW DRIFT: 0.3
µV/°C
● HIGH OPEN-LOOP GAIN: 130dB min
● LOW QUIESCENT CURRENT: 1.5mA typ
● REPLACES INDUSTRY-STANDARD OP
AMPS: OP-07, OP-77, OP-177, AD707,
ETC.
APPLICATIONS
● PRECISION INSTRUMENTATION
● DATA ACQUISITION
● TEST EQUIPMENT
● BRIDGE AMPLIFIER
● THERMOCOUPLE AMPLIFIER
Precision
OPERATIONAL AMPLIFIER
14kΩ
500Ω
Trim
8
V+
7
Trim
1
+In
3
–In
2
V–
4
25Ω
30Ω
V
6
O
20µA
500Ω
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-
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.
®
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
OPA177
OPA177
SBOS008