Analysis and design of a fast-settling folded-cascode CMOS operational amplifier for switched-capacitor applications

Abstract

A complete analysis of the commonly used one-stage folded cascode CMOS operational amplifier (opamp) is given. A simple two pole circuit model is developed and used to design the opamp for the minimum settling time (MST) response in switched-capacitor applications. The MST design equation for the opamp is given in terms of the desired settling accuracy.< >