The simulation errors introduced by the SPICE transient analysis

Author

Brambilla, Angelo ; D´Amore, Dario

Author_Institution

Dipartimento di Elettronica ed Inf., Politecnico di Milano, Italy

Volume

40

Issue

1

fYear

1993

fDate

1/1/1993 12:00:00 AM

Firstpage

57

Lastpage

60

Abstract

The SPICE transient simulations of simple circuits that can be easily solved by hand often give erroneous results. The numerical errors are investigated and analyzed using the analogy of the simulation program with a digital integrator. The transfer function of the digital integrator is defined through the z-transform. The solving method implemented in SPICE is one of the possible approximations of the z-transform. This approximation has some good properties but also some drawbacks; it warps the frequency and it is not step invariant

Keywords

SPICE; circuit analysis computing; digital simulation; errors; transient response; SPICE transient analysis; digital integrator; numerical errors; simulation errors; simulation program; transfer function; trapezoidal method; z-transform; Analytical models; Circuit simulation; Digital systems; Equations; Finite wordlength effects; Frequency; SPICE; Sampling methods; Transfer functions; Transient analysis;

fLanguage

English

Journal_Title

Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on

Publisher

ieee

ISSN

1057-7122

Type

jour

DOI

10.1109/81.215346

Filename

215346