AnsweredAssumed Answered

how to calculate on chip temperature?

Question asked by Allen Huang on May 13, 2015
Latest reply on Nov 6, 2015 by EARL GOODRICH

I have got below data from KEA128RM. But I still don't know how to get real chip temperature.

Pls help it.


The ADC module integrates an on-chip temperature sensor. Following actions must be

performed to use this temperature sensor.

• Configure ADC for long sample with a maximum of 1 MHz clock

• Convert the bandgap voltage reference channel (AD23)

• By converting the digital value of the bandgap voltage reference channel using

the value of VBG, the user can determine VDD.

• Convert the temperature sensor channel (AD22)

• By using the calculated value of VDD, convert the digital value of AD22 into a

voltage, VTEMP