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发表于 2008-8-15 08:05:30
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besides body effect, it's also relative to your bias. eg. Vds. If you sweep the Vds, Vt is actually changes with that.
I shall say that Vt is a complex function in deep sub-micro process related to a lot of variables. You may take a glance at the technology file, you may find Vt0 which is fixed and some other parameters together to produce Vt.
Also, Vt is somehow just a definition, it's not surprise Sprectre maybe gives the Vt just easy for it to simulate as long as the final results are accurate. |
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