DISCRETE TIME INTEGRATOR CIRCUIT WITH FUNCTION OF COMPENSATING GAIN OF OPERATIONAL AMPLIFIER

摘要

The present invention relates to a discrete time integrator circuit with a function of compensating gain of an operational amplifier. The integrator circuit has a first node, a second node, and a third node sequentially from an input end to an output end. The integrator circuit comprises: an operational amplifier in which the input end is connected to the third node and the output end is connected to the output end; a sample capacitor having one end connected to the first node and the other end connected to the second node and performing a sampling operation for electric charge inputted to the input end; an integration capacitor having one end connected to the third node and the other end connected to an output terminal of the operational amplifier and performing an integration operation integrating a difference value of a feedback signal to which output of the operational amplifier is fed back and an input signal inputted to the operational amplifier; and a compensation buffer having one end connected to the third node and the other end connected to the first node to provide compensation electric charge.;COPYRIGHT KIPO 2019