Mixed Level Functional-Circuit Simulation of Analog Systems: A Conceptual Study

摘要

A systematic top down design of analog circuits and systems is not as well supported by modeling and simulation techniques as sophisticated digital circuit design. After a more general review of modeling techniques for circuit simulation, simple behavioral macromodels for some standard functional building blocks are presented. Macromodeling of operational amplifiers in analog system design is discussed in some detail. After discussion of behavioral macromodeling, which is rather close to conventional circuit simulation techniques, traditional continuous system modeling on the other hand is considered. The aim is to bridge both worlds of circuit simulation and continuous system simulation and to combine both standard techniques into a rather obvious but novel approach to mixed functional-circuit simulation of analog, multi-energy domain systems, offering many advantages to the designer of analog circuits and systems. These advantages are clearly pointed out. The report concludes by presenting three concepts of implementing mixed functional-circuit simulation and gives an assessment of them. (Copyright (c) GMD 1988.)