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aago

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How can I import SPICE models to Cadence Virtuoso?
Oct 10^th, 2008, 12:14pm

Hi there.

I've got a problem. I need to design some stuff and so i need to use commercial device models, like I would if I were using LTSpice or OrCAD. How can I import SPICE models of commercial devices to Cadence Virtuoso (SPECTRE)? Or better, how can I export a design of mine to a model that I can use in OrCAD?

I hope I was clear, I really need help.

Thanks.

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ywguo

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Shanghai, PRC

Re: How can I import SPICE models to Cadence Virtuoso?
Reply #1 - Oct 10^th, 2008, 8:35pm

Hi aago,

Would you simulate your design with spectre, OrCAD, or LTSpice?

I don't know the commercial models for OrCAD or LTSpice. I guess it is SPICE-like models. If you simulate with Spectre, probably it can read and interpret those models, for that Spectre can read SPICE2, SPICE3, PSPICE, HSPICE netlist and models directly now. I remember the simulator in OrCAD is PSPICE.

Yawei

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aago

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Re: How can I import SPICE models to Cadence Virtuoso?
Reply #2 - Oct 14^th, 2008, 11:31am

ywguo wrote on Oct 10^th, 2008, 8:35pm:

Hi aago,

Would you simulate your design with spectre, OrCAD, or LTSpice?

I don't know the commercial models for OrCAD or LTSpice. I guess it is SPICE-like models. If you simulate with Spectre, probably it can read and interpret those models, for that Spectre can read SPICE2, SPICE3, PSPICE, HSPICE netlist and models directly now. I remember the simulator in OrCAD is PSPICE.

Yawei

Hi ywguo

Thanks for answering! Yes the commercial models are SPICE-like and simulator in OrCAD is PSPICE. But I think I wasnt clear, maybe its a language issue, since english is not my native language. The fact is I designed a chip with Cadence Virtuoso and I will use this device to design another product. In this product there'll be a lot of commercial devices. If I could use a simulator like OrCAD or LTSpice it would be ok since I can get the commercial models on the web and simulate them. So I have two choices:

1 - To export MY device to an environment like OrCAD or LTSpice*
2 - To export the commercial models to the Virtuoso environment (Spectre)

* my prefered since I can easily use the models of the Linear Technology devices

I think the first one is the best choice. But I cant find any help to do this.

Hope you got the point.

Thanks!

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Geoffrey_Coram

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Massachusetts, USA

Re: How can I import SPICE models to Cadence Virtuoso?
Reply #3 - Oct 15^th, 2008, 5:29am

aago wrote on Oct 14^th, 2008, 11:31am:

1 - To export MY device to an environment like OrCAD or LTSpice*
2 - To export the commercial models to the Virtuoso environment (Spectre)

* my prefered since I can easily use the models of the Linear Technology devices

Are you looking to convert the whole circuit, including netlist and .model cards, or to construct a behavioral model that gives a good approximation of your circuit?

If it's the latter, then you need to visit the behavioral modeling or analog verification sections of this forum. But it's not an easy task.

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If at first you do succeed, STOP, raise your standards, and stop wasting your time.

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