Patent ID: 8084727

Claim:
The device for detecting an electromagnetic radiation, comprising a matrix of juxtaposed elementary sensors, each associated with a common substrate in which a sequential addressing read circuit is prepared, specific to each of the sensors, thereby constituting as many pixels, the interaction of the radiation with each of the sensors generating electric charges outputted by the sensor in the form of a current to be converted to voltage for their subsequent processing, each of the sensors being biased via an injection transistor, of which one of the terminals is connected to an integration capacitance, integrating the electric charges generated by the sensor during an integration phase, the quantity of charges stored during the integration phase being the integration capacitance, which is then processed for conversion to voltage, wherein each of the pixels of the matrix is associated with a current limiting device, for limiting the current outputted by each of the elementary sensors to a maximum called reference current, regardless of the radiation flux received by the pixel concerned, wherein the current limiting device receives two input signals, the measurement of the detector current and the reference current respectively, and in that it transmits an output signal, consisting of a physical quantity suitable for controlling the injection transistor.