Method and system for characterizing electronic circuitry

摘要

According to the invention a characteristic property of an electronic circuit component depending on at least one variable (X₁, X₂) is approximated by an approximating function. This is accomplished by dividing a total range of said least one variable into a number of sub-ranges by inserting dividing nodes ( 4 ), and approximating characterization data points ( 2 ) in each of the sub-ranges by an elementary function, wherein the elementary functions defined in the sub-ranges join together to form said approximating function defined in said total range. The approximation is accomplished such that the approximating function is continuously partial differentiable with respect to said at least one variable (X₁, X₂) in the dividing nodes ( 4 ).