A Symbolic Method for Distortion Analysis and Optimization

DOI

10.2991/aiie-15.2015.118How to use a DOI?

Keywords

distortion analysis; operational amplifier (opamp); optimization; symbolic analysis

Abstract

A symbolic method is presented for calculation of the weakly nonlinear distortion effect of operational amplifiers. To avoid complicated symbolic generation by considering all transistor nonlinearities, a simplified analysis method is adopted. This method identifies the nonlinearity of each amplifier stage by a low-order polynomial. The proposed symbolic method can derive analytical distortion results automatically without the need of going through lengthy signal-flow graph analysis. This method is applied to sweep analysis of the opamp distortion with respect to the external feedback elements, by which optimal selection of the parameter value can be determined at any given frequency. Remarkable speedup over repeated Spectre simulation has been observed.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - J. Chen
AU  - G. Shi
AU  - A. Zhang
PY  - 2015/07
DA  - 2015/07
TI  - A Symbolic Method for Distortion Analysis and Optimization
BT  - Proceedings of the 2015 International Conference on Artificial Intelligence and Industrial Engineering
PB  - Atlantis Press
SP  - 433
EP  - 436
SN  - 1951-6851
UR  - https://doi.org/10.2991/aiie-15.2015.118
DO  - 10.2991/aiie-15.2015.118
ID  - Chen2015/07
ER  -