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Simulators >> Circuit Simulators >> Pseudo Code for Transient analysis
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Message started by shaikhsarfraz on Jan 25^th, 2007, 10:16pm

Title: Pseudo Code for Transient analysis
Post by shaikhsarfraz on Jan 25^th, 2007, 10:16pm

Hi,
Can any body tell me how Spectre performs Transient analysis.
I have gone through some notes and docs.

Can some body give me explanation using some simple circuits like a current mirror or common source amplifier.
I want to know how it finds the dc operating point, and performs transient analysis by solving the KVL or KCL.

regards
sarfraz

Title: Re: Pseudo Code for Transient analysis
Post by Geoffrey_Coram on Jan 26^th, 2007, 4:58am

Read Ken's book: Designer's Guide to Spice and Spectre.

The basic ideas for finding dc op point, as well as for setting up the matrix for KCL and KVL (modified nodal analysis), are pretty much the same in good old Berkeley Spice as in Spectre. Ken will tell you that Spectre is smarter about some things (ie, it actually checks that KCL is satisfied, whereas Spice just checks whether the change in currents is "small"), but these details are well beyond the level of questions you're asking.