A thermocouple is two wires made of different metals connected together at one end. Because thermocouples are so basic, they have a number of advantages: they can measure extreme temperatures (-270*C to +1800*C), are robust, can be very small, can have a very fast response times, and have no self heating. However thermocouples require considerable signal conditioning: their signal is small, their transfer function is non-linear, and they require an additional temperature sensor at their reference junction (cold junction compensation).

Thermocouple Measurement

Thermocouple Measurement

Application Note: Temperature is easily the most commonly measured physical parameter. A number of transducers serve temperature measuring needs and each has advantages and considerations.

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Thermocouple Linearization

Thermocouple Linearization

Application Note: The AD8494/AD8495/AD8496/AD8497 thermocouple amplifiers provide a simple, low cost solution for measuring thermocouple temperatures.

Read About Linearization

Thermocouple Signal Conditioning Using the AD594/AD595

Thermocouple Signal Conditioning

Application Note: Using the AD594/AD595 we review thermocouple fundamentals and illustrate circuit designs for thermocouple signal conditioning

Read About Signal Conditioning

Thermocouple 101

Thermocouple 101 is an 8 video whiteboard series covering a wide range of Thermocouple related topics.

Watch the Video series

Signal Chains


Click on a part in the diagram below

Reference Designs

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