Re: [SI-LIST] : modeling languages (was: receiver jitter)

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From: Jim Freeman (freeman@broadcom.com)
Date: Fri Jan 21 2000 - 17:39:23 PST


Hi Fred,
    Hspice will accomodate different models from different vendors but
not automatically. If scale is the same for different models, all you
have to do is rename the models from other vendors with a unique name
and edit the netlist to reference the same name. I have simulated up to
8 different technologies in the same simulation using this technique. I
have no idea how high it can go but I suspect the limit has to do more
with the simulation machine than the Hspice code.

Jim Freeman
P.S. I have been doing this with Hspice since '89.
Fred Balistreri wrote:

> Hello Jim, the answer is no. Not even Hspice will do that if the
> parts are from different vendors that use different modeling
> methodologies. Hspice also uses propietary models, those
> cannot be done by law. However the levels that are public
> are compatible. That is one of the reasons why I said I
> understand why people use Hspice.
>
> However realize that Hspice is designed for IC not SI
> engineers. Where as Aspice is designed for SI engineers.
> The advantages we have are not in the IC areas but rather
> in the SI area. I realize that transistor level model do play
> an important role and for that we do have a solution although
> it may not be as "clean" as one would like.
>
> Best Regards,
>
> Jim Freeman wrote:
>
>> Part 1.1 Type: Plain Text (text/plain)
>> Encoding: 7bit
>
> --
> Fred Balistreri
> fred@apsimtech.com
>
> http://www.apsimtech.com
>
>

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