NUMERICAL FULL WELL CAPACITY EXTENSION FOR PHOTO SENSORS WITH AN INTEGRATION CAPACITOR IN THE READOUT CIRCUIT USING TWO AND FOUR PHASE CHARGE SUBTRACTION

摘要

A detector circuit having an integration capacitor coupled to an amplifier via a switch matrix and a comparator coupled to the amplifier, the integration capacitor operable in two or more phases, the switch matrix is configured to phase switch the integration capacitor, the comparator triggers the phase switch when the output voltage of the amplifier passes the threshold voltage of the comparator.