In the datasheet the equation to calculate the temperature can be found.
This equation calculates the temperature rise referred to 25°C, so to calculate the absolute temperature it is necessary to add 25° to the previous equation:
The DVbe voltage must be calculated from the data provided by the SAR with the following expression:
DVBE= Differential voltage base emitter.
ADCcode= Decimal value provided by the SAR ADC.
Example:
The data read from the ADC in hexadecimal is 0x970 which converted to decimal gives 2416. Assuming bipolar power supply:
