CIRCUIT DE DETECTION A FAIBLE FLUX ET FAIBLE BRUIT

摘要

The circuit has a photodetector (1) i.e. photodiode, connected to an integration node, and a biasing circuit for biasing the photodiode between a reverse-bias state and a floating state. A readout circuit (4) is connected to the integration node for generating a signal representative of a scene observed by the photodiode. A metal shield (5) is arranged around the integration node and connected to an output of the readout circuit. The shield is configured to have a potential varying in a direction as a potential at the integration node.