[IBIS-Users] Minimum #points in Rising/Falling waveform to allow convergence

Hello IBISers

We discovered that some of our models caused non-convergence in simulation
due to insufficient points in transition region of the rising/falling
waveforms. For example, our V-t curves' timescale was such that we only had
2-3 points in the transition region, with the rest in the 'boring' flat
region after the signal is stable. This caused inconvergence issues in
Spectraquest crosstalk simulations.

We are now revisiting our models to regenerate those that will run into this
problem. However, I don't have a feel for what the 'minimal' number of
points in the transition region is, and I don't want to force regeneration
of models that don't need it.

Does anyone have a feel for the minimum number of points in the transition
region in order to allow convergence?

Thanks for your input
Tess Trethewey
Cypress Applications Engineering

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