资料介绍
There is a variety of temperature sensors on the market
all of which meet specific application needs. The most
common sensors used to solve these application prob-
lems include the thermocouple, Resistive Temperature
Detector (RTD), Thermistor, and silicon based sensors.
For an overview and comparison of these sensors,
refer to Microchip’s
AN679, “Temperature Sensing
Technologies”
.
This application note focuses on circuit solutions that
use thermocouples in the design. The signal condition-
ing path for the thermocouple system will be discussed
in this application note followed by complete application
circuits.M AN684
Single Supply Temperature Sensing with Thermocouples
bead. This bead is exposed to the thermal environment
Author: Bonnie C. Baker
of interest. If there is a temperature difference between
Microchip Technology Inc.
the bead and the other end of the thermocouple wires,
a voltage will appear between the two wires at the end
INTRODUCTION where the wires are not soldere
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