Method and apparatus for representing integrated circuit device characteristics using polynomial equations

摘要

An approach for representing integrated circuit device characteristics using polynomial equations involves analyzing integrated circuit device characterization data in a lookup table form and using an order incremental scheme to determine a polynomial equation of a relatively low-order that satisfies specified accuracy criteria. In situations where a polynomial equation that has an order less than a maximum allowable order cannot be determined, the integrated circuit device characterization data is partitioned into sub-domains and polynomial equations are determined separately for each sub-domain. The separate polynomial equations are then combined to generate a piecewise polynomial equation that represents all of the integrated circuit device characterization data.