Patent ID: 6608311
Filing Date: 2003-08-19
Classification: H04N

Abstract:
An image detector, comprising an array of photodiodes, plural adapter amplifiers integrated on one and the same substrate, configured to receive electric charges produced by the photodiodes, the electric charges being produced during an integration phase during which they are each biased by a bias voltage, each adapter amplifier having a first input and a second input, the bias voltage being applied to the cathode or anode of each photodiode by way of the first input of a respective adapter amplifier whose second input is linked to a drive input which is common to the plural adapter amplifiers of the same substrate and is brought to a drive voltage, and an additional adapter amplifier integrated on the same substrate, having its second input also receiving the drive voltage, and in that there is provided a circuit receiving the voltage present on the first input of the additional adapter amplifier as a reference potential and establishing between the cathodes or anodes of the photodiodes and the second inputs of the adapter amplifiers a potential difference referenced with respect to the reference potential.