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Determining the dominant nonlinear contributions in a multistage op-amp in a feedback configuration

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4 Author(s)
Cooman, A. ; Dept. ELEC, Vrije Univ. Brussel, Brussels, Belgium ; Geerardyn, E. ; Vandersteen, G. ; Rolain, Y.

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 configuration. 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.

Published in:

Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design (SMACD), 2012 International Conference on

Date of Conference:

19-21 Sept. 2012

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