Ultraprecision
Operational Amplifier
a
OP177
PIN CONNECTIONS
FEATURES
Ultralow Offset Voltage:
TA = +25؇C: 10 V m ax
–55؇C ≤ TA ≤ +125؇C: 20 V m ax
Outstanding Offset Voltage Drift: 0.1 V/ ؇C m ax
Excellent Open-Loop Gain and Gain Linearity:
12 V/ V typ
Epoxy Mini-DIP
OP177BRC/883
LCC (RC Suffix)
(P Suffix)
8-Pin Hermetic DIP
(Z-Suffix)
8-Pin SO
(S-Suffix)
CMRR: 130 dB m in
PSRR: 120 dB m in
Low Supply Current: 2.0 m A m ax
Fits Industry Standard Precision Op Am p Sockets
(OP07/ OP77)
NC = NO CONNECT
NC = NO CONNECT
GENERAL DESCRIPTION
This low noise bipolar input op amp is also a cost effective
alternative to chopper-stabilized amplifiers. The OP177 provides
chopper-type performance without the usual problems of high
noise, low frequency chopper spikes, large physical size, limited
common-mode input voltage range, and bulky external storage
capacitors.
The OP177 features the highest precision performance of any
op amp currently available. Offset voltage of the OP177 is only
10 µV max at room temperature and 20 µV max over the full
military temperature range of –55°C to +125°C. The ultralow
V
OS of the OP177, combines with its exceptional offset voltage
drift (TCVOS) of 0.1 µV/°C max, to eliminate the need for
external VOS adjustment and increases system accuracy over
temperature.
The OP177 is offered in both the –55°C to +125°C military,
and the –40°C to +85°C extended industrial temperature
ranges. This product is available in 8-pin ceramic and epoxy
DIPs, as well as the space saving 8-pin Small-Outline (SO) and
the Leadless Chip Carrier (LCC) packages.
The OP177’s open-loop gain of 12 V/µV is maintained over the
full ±10 V output range. CMRR of 130 dB min, PSRR of
120 dB min, and maximum supply current of 2 mA are just a
few examples of the excellent performance of this operational
amplifier. The OP177’s combination of outstanding specifications
insure accurate performance in high closed-loop gain applications.
Figure 1. Sim plified Schem atic
REV. B
Inform ation furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assum ed by Analog Devices for its
use, nor for any infringem ents of patents or other rights of third parties
which m ay result from its use. No license is granted by im plication or
otherwise under any patent or patent rights of Analog Devices.
© Analog Devices, Inc., 1995
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