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IEICE TRANSACTIONS on Fundamentals

Efficient DDD-Based Interpretable Symbolic Characterization of Large Analog Circuits

Sheldon X.-D. TAN, C.-J. Richard SHI

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Summary :

A systematic and efficient approach is presented to generating simple yet accurate symbolic expressions for transfer functions and characteristics of large linear analog circuits. The approach is based on a compact determinant decision diagram (DDD) representation of exact transfer functions and characteristics. Several key tasks of generating interpretable symbolic expressions--DDD graph simplification, term de-cancellation, and dominant-term generation--are shown to be able to perform linearly by means of DDD graph operations. An efficient algorithm for generating dominant terms is presented based on the concepts of finding the k-shortest paths in a DDD graph. Experimental results show that our approach outperforms other start-of-the-art approaches, and is capable of generating interpretable expressions for typical analog blocks in minutes on modern computer workstations.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E86-A No.12 pp.3110-3118
Publication Date
2003/12/01
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category
Analog Design

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