I have 2 questions about the process of creating an
IBIS model from an HSPICE model using s2ibis2:
1. The HSPICE model I have uses different libraries to model
effects of process variations. As far as I can
tell, s2ibis2 does not make it possible to switch
libraries when sweeping through the "min, typ, max"
sequence. s2ibis2 appears to only vary supply
voltage and temperature to obtain the min, typ
and max curves, implying that one must run s2ibis2
3 times and pick the correct voltage/temp variations
from each run to put together the full set with
process variations included. Do I have this right?
2. The HSPICE model I have also includes package parasitics.
Would I have to remove these for the s2ibis2 run and
add them in by hand? Otherwise, I would assume that they
would affect the rising and falling curves and would
therefore implicitly be included.
Thanks to anyone who can help.
-- Kim Helliwell Senior CAE Engineer Acuson Corporation Phone: 650 694 5030 FAX: 650 943 7260Received on Fri May 14 16:15:26 1999
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