AN-269: Temperature Transducers and Signal Conditioning Circuits

Overview

This application note provides detailed circuit designs and implementation strategies for the AD590 integrated circuit temperature transducer. It covers fundamental principles of temperature-to-voltage conversion, multi-point sensing, and differential temperature measurement. The document outlines methods for achieving high accuracy through calibration and explores signal conditioning using instrumentation amplifiers such as the AD524 and AD624, as well as operational amplifiers like the OP07 and OP27. Additionally, it addresses cold-junction compensation for various thermocouple types and provides interfacing solutions using voltage references including the AD580, REF01, and REF02.

Referenced Parts