On Fri, Apr 18, 2025 at 02:32 AM, Say Die. wrote:
I Am trying for 20nm FinFET design and i have 45 and 180nm done but i cannot find any file for 20nm with 54 or any other level for ltspice.
One thing to keep in mind about transistor models, is that they are meant to describe the fabrication process.? They are inherently linked to only the FAB that you use.? A model for one FAB line does not work for another FAB line or from another manufacturer.? Normally, one gets the SPICE model from the manufacturer - not by finding something on the Internet!
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When talking about (say) a 20nm process, it might be that everyone gets their chips from the same manufacturer made to the same specifications, and then there would be only one model that everyone uses for that step.? But don't count on it.? In general, you should ask the people who will make your chips, for their SPICE models.? Specify that you need LEVEL=X models (pick one from the list), or only LTspice-capable models, but they are less likely to understand LTspice than LEVEL numbers.? I would not count on models from anyone else to work for your 20nm chips.
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Andy
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