3 Temperature Measurement Principle

To perform a corrected reading of the junction temperature (T_J):

1. Initialize the temperature sensor system (i.e., ADC and Temperature Sensor and Voltage Reference module).
2. Read the V_TEMP voltage with the ADC (output code: ADC_VTEMP).
3. Read the V_BG voltage with the ADC (output code: ADC_VBG).
4. Apply a correction formula using the OTP calibration data:

   T_J = f(ADC_TEMP, ADC_VBG, OTP_CALIBRATION_DATA).

In the case of periodic temperature measurements, step 1 may be done once at the initialization phase of the application. Steps 2, 3 and 4 are repeated each time a temperature reading is required. Considering the temperature variation dynamics, a 1-second interval between two measurements fits most applications.