[SI-LIST] Re: Do you ever measure any of the things you model?
- From: "Chris Cheng" <Chris.Cheng@xxxxxxxx>
- To: "Muranyi, Arpad" <Arpad_Muranyi@xxxxxxxxxx>, <si-list@xxxxxxxxxxxxx>
- Date: Tue, 1 Apr 2008 19:04:48 -0700
>1) I don't think I was bad mouthing my previous employer, at least
>I didn't intend to. What I wrote were facts, and as a result of
>our SI correlation work, improvements were also made to the SPICE
>models.
DT can generate external SPICE to as accurate level as you want from =
internal models. It is just a matter of how big a stick you can bring to =
their office to move their ZBB line. ;-D
>2) The rest of your writing reminds me to another saying: "You can
>lead to horse to the water, but you can't force it to drink".
>
>So, how do we get people to write better models?
>
>Arpad
The first step to solve the problem is to admit we have a problem. We =
should stop claiming we have perfect correlation when we can't even =
model the real problem. I am not talking about whether the tool we use =
is capable of doing it, I am talking about whether the actual model we =
generate includes the effects or not.
What do you think about start with giving out encrypted HSPICE ? Yes, =
.global or internal vs. external spice can be a problem but at least =
that is a higher and more flexible base to start. From that you can =
generate your favorite IBIS or AMS levels, either by the customer or by =
your customers hired gun. Give the responsibility into the customers =
hand. Let them control their own destiny. This is just a matter of =
logistic, let's not get into which tool is favor by who. My thinking =
always has been the semiconductor house themselves has to design their =
chips with SPICE and characterize their I/O in SPICE no matter it is =
internal version or industrial standard SPICE anyways. It may be slow or =
it may be clumsy, but it is something readily available and a good =
starting point to do greater and more wonderful things such as AMS or =
IBIS. I have yet to hear a semiconductor foundry not supporting HSPICE =
anyways.
Life is not perfect, I am just trying to suggest a common starting =
point, not the end game.
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