Ultraprecision

Operational Amplifier

OP177

Rev. E

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FEATURES

Ultralow offset voltage

Outstanding offset voltage drift 0.1 μV/°C maximum

Excellent open-loop gain and gain linearity

12 V/μV typical

CMRR: 130 dB minimum

PSRR: 115 dB minimum

Low supply current 2.0 mA maximum

Fits industry-standard precision op amp sockets

PIN CONFIGURATION

8

7

6

5

1

2

3

4

NC = NO CONNECT

–IN

+IN

V+

OUT

NC

V–

OP177

TOP VIEW

(Not to Scale)

Figure 1. 8-Lead PDIP (P-Suffix),

8-Lead SOIC (S-Suffix)

GENERAL DESCRIPTION

The OP177 features one of the highest precision performance of

any op amp currently available. Offset voltage of the OP177 is

the OP177 combines with its exceptional offset voltage drift

temperature.

The OP177 open-loop gain of 12 V/μV is maintained over the

full ±10 V output range. CMRR of 130 dB minimum, PSRR of

120 dB minimum, and maximum supply current of 2 mA are

just a few examples of the excellent performance of this

operational amplifier. The combination of outstanding

specifications of the OP177 ensures accurate performance in

high closed-loop gain applications.

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 is offered in the −40°C to +85°C extended industrial

temperature ranges. This product is available in 8-lead PDIP, as

well as the space saving 8-lead SOIC.

FUNCTIONAL BLOCK DIAGRAM

2B

(OPTIONAL NULL)

OUTPUT

V+

V–

NONINVERTING

INPUT

INVERTING

INPUT

Figure 2. Simplified Schematic