Title :
The realization of op amp nonlinear macromodel on SPICE
Author_Institution :
Dept. of Electron. Eng., Tianjin Univ.
Abstract :
In this paper a comparatively ideal curve fitting technique for a nonlinear function is used to approach the large signal saturation nonlinear characteristics of an op amp input stage, so that the time domain response of circuits containing nonlinear op amp macromodels can be simulated precisely on SPICE. A relevant curve fitting program is realized and two circuits are analysed, giving satisfactory results
Keywords :
circuit analysis computing; curve fitting; equivalent circuits; nonlinear network analysis; operational amplifiers; SPICE; curve fitting program; input stage; large signal saturation; nonlinear characteristics; nonlinear function; nonlinear macromodel; op amp; time domain response; Chebyshev approximation; Circuit analysis; Circuit simulation; Curve fitting; Frequency domain analysis; Operational amplifiers; Polynomials; SPICE; Signal analysis; Voltage;
Conference_Titel :
Circuits and Systems, 1991. Conference Proceedings, China., 1991 International Conference on
Conference_Location :
Shenzhen
DOI :
10.1109/CICCAS.1991.184508
