- DISCRETE-TIME INTEGRATOR CIRCUIT WITH OPERATIONAL AMPLIFIER GAIN COMPENSATION FUNCTION

摘要

The present invention relates to a discrete-time integrator circuit having an operational amplifier gain compensation function, wherein the integrator circuit has a first node, a second node and a third node sequentially from an input end to an output end, An operational amplifier connected to the third node and having an output terminal connected to the output terminal, a sampling circuit for performing a sampling operation on charges input to the input terminal, the operational amplifier having one end connected to the first node and the other end connected to the second node A differential amplifier circuit for amplifying a difference value between a feedback signal whose one end is connected to the third node and the other end is connected to an output terminal of the operational amplifier and whose output is fed back and an input signal inputted to the operational amplifier is integrated An integrator capacitor having one end connected to the third node and the other end connected to the first node; Is includes a compensation buffer that provides a compensation charge.