Patent ID: 6342800
Filing Date: 2002-01-29
Classification: G11C,H03K

Abstract:
A charge compensation control circuit, comprising:a first node operable to provide a supply voltage for a first circuit having charge consumption characteristics; a first charge compensation circuit operably coupled to the first node, wherein the first charge compensation circuit is operable to supply supplemental charge to the first node based on a first charge compensation value; and a control circuit operably coupled to the first charge compensation circuit, the control circuit including: a second node operable to provide a supply voltage to a second circuit, wherein charge consumption characteristics of the second circuit are substantially similar to charge consumption characteristics of the first circuit; a second charge compensation circuit operably coupled to the second node, wherein the second charge compensation circuit is operable to supply supplemental charge to the second node based on a second charge compensation value; a regulator operably coupled to the second node, the regulator operative to control a voltage at the second node such that the voltage at the second node corresponds to a reference voltage, wherein the regulator generates a compensation signal when the regulator responds to changes in the voltage on the second node so as to maintain the second node at the voltage corresponding to the reference voltage; and a control block operably coupled to the regulator and operable to generate the first and second charge compensation values, wherein the control block adjusts the first and second charge compensation values based on the compensation signal.