Abstract:
Embodiments of the invention concern a temperature sensor comprising: a same oscillator (2) adapted to alternatively generate a temperature dependent output frequency in a sensing mode and a temperature independent output frequency in a calibration mode, a controller (1) of said oscillator (2), adapted to feed said oscillator (2) with at least a first input signal (VREF), and adapted to change said first input signal (VREF) so as to make said oscillator (2) switch between generating a temperature dependent output frequency and generating a temperature independent output frequency.