Patent ID: 8872097

Claim:
A detection circuit comprising: a photodiode connected to an integration node, a biasing circuit for biasing the photodiode between a first reverse-bias state and a second floating state so as to form a Source Follower per Detector, a readout circuit connected to the integration node for generating a signal representative of the scene observed by the photodiode, a metal shielding arranged around the integration node and connected to an output of the readout circuit configured to have a potential varying in a same way as a potential at the integration node and form an electric shielding, wherein the photodiode is made on a first substrate, the biasing circuit and the readout circuit are made on a second substrate, the photodiode being connected to the biasing circuit and the readout circuit by means of an electric contact, the electric contact being surrounded by a metal ring connected to an output of the readout circuit.