Title :
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
fDate :
1/1/1993 12:00:00 AM
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;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
