Diagram Guide

This is a Simple SGI or Strain Gauge (Gage) Instrumentation Amplifier Circuit Diagram.This schema has an overall gain of 320. More gain can easily be obtained by lowering the value of R2. Untrimmed Vas is 10 11V. and Vas tempco is less· than O.lJIV/°C. In many diagram, the OP07 can be omitted, with the two MAX421 differential outputs connected directly to the differential inputs of an integrating a /d.