## Overview of Symbolic Methods in Industrial Analog Circuit Design

• Industrial analog circuits are usually designed using numerical simulation tools. To obtain a deeper circuit understanding, symbolic analysis techniques can additionally be applied. Approximation methods which reduce the complexity of symbolic expressions are needed in order to handle industrial-sized problems. This paper will give an overview to the field of symbolic analog circuit analysis. Starting with a motivation, the state-of-the-art simplification algorithms for linear as well as for nonlinear circuits are presented. The basic ideas behind the different techniques are described, whereas the technical details can be found in the cited references. Finally, the application of linear and nonlinear symbolic analysis will be shown on two example circuits.

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Author: T. Haffmann, T. Wichmann urn:nbn:de:hbz:386-kluedo-13095 Berichte des Fraunhofer-Instituts für Techno- und Wirtschaftsmathematik (ITWM Report) (44) Report English 2003 2003 Fraunhofer-Institut für Techno- und Wirtschaftsmathematik 2004/02/10 CAD; automated analog circuit design; behavioral modeling; circuit sizing; computer algebra; dif; macro modeling; symbolic analysis; system simulation Fraunhofer (ITWM) 5 Naturwissenschaften und Mathematik / 51 Mathematik / 510 Mathematik Standard gemäß KLUEDO-Leitlinien vor dem 27.05.2011

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