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What is a thermal sensing circuit?

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popoyboys

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thermal sensing circuit

may i ask what is a thermal sensing circuit?
can someone provide a sample thermal sensing circuit?

what is its purpose in semiconductor device testing?
 

rikie_rizza

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thermal sensing circuit

Thermal sensing circuit is a circuit build to detect the temperature of the device. The diode forward voltage from the device pin related to gnd can be measure. the result than converted to temperature.

This is useful when we test semicon device but unable to detect the real temperature, e.g is it true the device is already -40C, this can be verify by measuring the diode.

Sory I dont have any sample.
 

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