Determining the Dominant Nonlinear Contributions in a multistage Op-amp in a Feedback Configuration

In this paper a simulation based method is proposed to determine the position of the dominant nonlinear contribution in the schematic of multistage op-amp operated in a feedback con?guration. The key idea is to combine the Best Linear Approximation (BLA) and a classical noise analysis to determine the dominant source of nonlinear contributions. This results in a powerful yet simple design tool which does not require special analyses or custom models. As an example, the method is applied to a folded-cascode op-amp.

ISBN:978-1-4673-0686-7

Publication year:2012

Keywords:nonlinear distortion, operational amplifiers

Accessibility:Closed