Photo-sensitive element for electro-optical sensors

摘要

Photo-sensitive element (10) for electro-optical sensors, comprising a photo-sensitive reception member (11), a current conversion circuit to convert the current generated by the photo-sensitive reception member (11) into a voltage signal, and an amplification and reading circuit. The current conversion circuit comprises a P-channel transistor (21) used as an ideal key and driven by a voltage that can vary between a high and a low power supply voltage. The photo-sensitive element is taken to a reset state if the driving voltage of the transistor (21) is low, and to an integration state if the driving voltage is high. <IMAGE>