Reading circuit of charges is adaptive preamplification and method of reading charges is adaptive preamplification

摘要

The invention relates to a reading circuit of the capacitive load comprising a first means (c1, c2), capacitor ca, for storing charges and means for reading a voltage taken across the terminals of the first capacitive means. The reading circuit comprises a second capacitive means of a capacitor cb is less than ca, the comparison means (comp) in order to compare the voltage read at the terminals of the first capacitive means to a threshold value (vthreshold) and means for controlling the transfer of charges stored in the first capacitive means towards the second capacitive means when the voltage read crosses the threshold value (vthreshold) - the invention applies to the detection of radiation in the field of imaging.