Automated model conversion for analogue simulation based on SPICE-level description

Automatic generation of circuit models has received great interest over the last few years, the models generated need to be used in the different work environment. This paper introduces the multiple model conversion system (MMCSD) to automatically convert the models into hardware description language (HDL) models for either single-input single-output (SISO) or multiple-input single-output (MISO) macromodels and behave as the operational amplifier (opamp). These models are obtained from the multiple model generation system using delta operator (MMGSD). It detects nonlinearity through variations in output error. We demonstrate the application of MMGSD using a two-stage CMOS opamp, comparing simulations of the macromodel against those of the original SPICE circuit utilizing transient analysis.