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Other CAD Tools >> Physical Verification, Extraction and Analysis >> Specify Terminals of a 3-terminal Inductor
https://designers-guide.org/forum/YaBB.pl?num=1112112841

Message started by Ray_Lin on Mar 29^th, 2005, 8:14am

Title: Specify Terminals of a 3-terminal Inductor
Post by Ray_Lin on Mar 29^th, 2005, 8:14am

Dear All:
I have a symmetric inductor with 3 terminals(Plus, Minus, and Common-mode), for the loading of a differential circuit(a Mixer). Plus and Minus nodes are with the metal 5, and Common-mode node is with metal 3. The Common-mode node can be easily specified in different CAD tools such as Diva and Dracula due to its different metal connection. But the Plus and Minus ndoes are not so due to their identical connection metal layer.
In DRACULA LVS, I can specify one of the two identical nodes as Plus node by a dumy layer. But I can not do so in Diva LVS command file because dummy layer cause other LVS problems.
Does anyone know how to specify each terminals of 3-terminal inductor in Diva LVS command file??

Title: Re: Specify Terminals of a 3-terminal Inductor
Post by Andrew Beckett on Mar 29^th, 2005, 8:53pm

If anything I would expect this to be easier in Diva than Dracula. Dracula only supports fixed types of devices, with fixed numbers of pins. Diva is flexible about device types and the number of pins of each.

So I see no reason why there should be any problem with doing this in Diva.

Without seeing the rule deck and layout, it's hard to say exactly what is going wrong - your description was rather vague as to the problem itself with Diva.

Regards,

Andrew.

Title: Re: Specify Terminals of a 3-terminal Inductor
Post by Ray_Lin on Apr 7^th, 2005, 1:54am

Thanks, I've solved this problem by label text.