DIGITAL READ-OUT INTEGRATED CIRCUIT FOR THE DIGITAL READING OF HIGH-SPEED IMAGE SENSORS

摘要

The invention relates to read-out integrated circuits (ROIC) for reading image sensor arrays. The invention comprises a novel pulse modulator topology as part of the analog-digital converter for active digital pixels, which attenuates signal losses caused by the initialisation times of the analog integrator. The invention also comprises the use of the function enabling cancellation of the low-frequency noise of the analog integrator using correlated double sampling. The invention is advantageous over current technology in that it increases the image capture speed or alternatively reduces the power consumption in active pixels without a loss of resolution.