Patent ID: 6060874
Filing Date: 2000-05-09
Classification: G05F,Y10S

Abstract:
A method of compensating for temperature-dependent variation in an output voltage of an amplifier circuit, comprising:(a) producing a .DELTA.V.sub.BE voltage in a compensation circuit by causing a first current and a second current to flow through a .DELTA.V.sub.BE -generating circuit including at least a first transistor, and applying the .DELTA.V.sub.BE voltage to a first terminal of a capacitor having a second terminal coupled to a summing conductor coupled to an input of the amplifier, the first current having a different temperature coefficient than the second current; and(b) transferring an amount of charge representative of the .DELTA.V.sub.BE voltage through the summing conductor into the feedback capacitor to compensate for the curvature in the output voltage of the amplifier.