文档介绍：Analog and Interface Product Solutions
Temperature Sensor Design Guide
Precision Temperature Measurement with Silicon IC Temperature
Sensors, Thermocouples, RTD Circuits and Thermistors
plete listing of products offered by Microchip Technology Inc. and their corresponding data sheets can be found at .
Design ideas in this guide use the following devices:
Voltage Output Logic parators and Serial Output
Temperature Sensors: Temperature Sensors: Operational Amplifiers: Temperature Sensors:
TC1046 TC620 TC6501 TC913A MCP616 TC72
TC1047A TC621 TC6502 TC7650 MCP617 TC74
TC622 TC6503 TC7652 MCP618 TC77
TC623 TC6504 MCP6541 MCP619 TCN75
TC624 MCP6542
MCP6543
MCP6544
Precision Temperature Measurement with Silicon IC Sensors, Thermocouples, RTDs and Thermistors Precision Temperature Measurement with Silicon IC Sensors, Thermocouples, RTDs and Thermistors
TEMPERATURE SENSORS - Overview
Temperature sensors are useful in thermometer circuits, Serial Output Temperature Sensors:
pensation applications, as well as a
Serial (digital) output temperature sensors offer
wide array of general purpose applications.
excellent temperature accuracy (±°C, typical) with
Microchip Technology Inc. offers a broad portfolio of a very low operating current of less than 250 µA.
thermal management products, including Logic Output, Communication with these devices is plished via
Voltage Output and Serial Output Temperature Sensors. an industry standard SMBus, I2C™ or SPI™ compatible
interface protocol. These devices feature very fast
Common Methods of Interfacing a Sensor
temperature conversion times, with temperature
resolution for the entire family ranging from °C
to 1°C.
Thermocouples
While thermocouples are usually selected because
of their wide temperature range, ruggedness and
price, they are highly non-linear and require significant
linearization algorithms. In addtion, the voltage output of
thi