Patent ID: 6806765
Filing Date: 2004-10-19
Classification: H03H

Abstract:
A transconductance-capacitance integrator comprising:a plurality of transconductors that provide transconductor currents responsive to respective voltages input to the transconductance-capacitance integrator; an adder that adds the transconductor currents to provide a transconductor output current; a current follower that provides an output current responsive to an input current; a capacitor, coupled to the current follower, that provides an output voltage of the transconductance-capacitance integrator responsive to the output current; a scaling circuit that scales the transconductor output current by a scaling factor to provide a scaled transconductor output current to the current follower as the input current; and a mode switch that is coupled to the adder, that is operable in a test/tuning operation mode to connect the transconductor output current to the scaling circuit, and that is operable in a normal operation mode to provide the transconductor output current to the current follower as the input current.