[SI-LIST] About the Cref in IBIS Model
- From: "cheng yin" <yinko_cheng@xxxxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Wed, 04 Jun 2003 09:04:04 +0800
Hi,
I got a IBIS Model file from the device producer.
I find this text in one output model : Rref = 500ohms . and no Cref
here.
But in the DataSheet of this device, it told me the t_pd measurement
information is
RL = 500ohms to GND, CL = 50pf to GND .
I want to caculate the propogation delay and final settle delay of this
device. I'm using
cadence's SpecctraQuest tool. So I think I should add 'Cref = 50pf' to the
IBIS file. Am I right?
Who can tell me how to do it?
thanks
Yinko
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