CIRCUIT PERFORMANCE MODELING BY MEANS OF FUZZY-LOGIC

This paper presents a fuzzy-logic based approach to circuit performanc e modeling, Starting from a set of input-output vectors obtained by si mulation (the training set), an automatic process adapts model paramet ers by means of neurofuzzy techniques. The resulting model can accurat ely reproduce the training set, even for a moderate number of rules. T he results obtained in several analog and digital examples, show that accurate models can be obtained with a simple, completely automatic pr ocess. To demonstrate the usefulness of the proposed model, it is used to evaluate the circuit performances in the optimization process of a n analog cell, achieving considerable speed-up.