Re: [SI-LIST] : Urgent help needed on HSPICE simulation

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From: Perry Qu (perry.qu@alcatel.com)
Date: Tue Aug 01 2000 - 11:39:56 PDT


Hi!

Refering to my question 2 posted this morning, I found that the simulation results are
quite different depending on how you specify and whether you specify the DC operating
point for the device. Is there any general guideline on we should specify the DC point
using .ic or .nodeset, etc. in HSPICE ? What could be wrong if I got the following error
message:

"**error**: no convergence in operating point"

Thanks in advance.

Best Regards

Perry

Perry Qu wrote:

> Good morning, everyone:
>
> Thank you for your help on my previous question posted on the SI list. I tried out
> the SPICE simulation that you guys suggested and I have the following problems:
>
> 2. In another case, I used a driver with SPICE model to drive a LVDS differential
> receiver with IBIS model. The voltage swing I got at the receiver pin much larger
> than the LVDS specifications. Do you have any idea what could be wrong ?
>
> Thank you very much for your help.
>
> Best Regards
>
> Perry
>
> SI Specialist
> Alcatel CID
> Kanata, ON, Canada
> Tel: (613) 7846720

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