Integrated digital tuning temporal contrast image sensor circuit

The invention comprises at least one digital active pixel including: an optical sensor which generates a current Isens as a function of an illumination power, a current-tunable high-pass filter which generates an effective current Ieff from the Isens current, and a phase-locked loop which generates a current Itune from a frequency signal ftune generated by external digital control signals, the Itune current being the tuning current of the tunable high-pass filter.