TRIANGULAR GRID BASED TABLE MODEL AND INTERPOLATION FOR CMOS CIRCUITS

摘要

The present invention provides a method for constructing and interpolating nonlinear table models to improve the accuracy of an integrated circuit cell model or to reduce the number of points required for a table. This method of the present invention implements a nonlinear table model that accurately approximates the inherent operation of CMOS circuits. The method specifies a delay surface and uses a triangular grid for interpolation of cell delay values. The triangular delay surface segment is defined by three adjacent values in the table. Interpolation uses an approximation for a triangular surface segment drawn by three adjacent table values.