GM1

+IN

-IN

CHOP1

CHOP2

Notch

Filter

GM_FF

GM2

GM3

C2

C1

OUT

17

OPA2188

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SBOS525C – AUGUST 2011 – REVISED JUNE 2016

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Copyright © 2011–2016, Texas Instruments Incorporated

8 Detailed Description

8.1 Overview

The OPA2188 operational amplifier combines precision offset and drift with excellent overall performance,

making the device ideal for many precision applications. The precision offset drift of only 0.085 µV/°C provides

stability over the entire temperature range. In addition, the device offers excellent overall performance with high

CMRR, PSRR, and AOL. As with all amplifiers, applications with noisy or high-impedance power supplies require

decoupling capacitors close to the device pins. In most cases, 0.1-µF capacitors are adequate.

8.2 Functional Block Diagram