vivkr
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Hi Berti,
Assuming that you have not missed out anything in the calculation, I would say that you cannot trust the model you have been given by your foundry. The BSIM3 model in itself should be OK. I have used it quite many times and it passes this basic check although the noise I get is not exactly kT/C but a few % more in most cases.
This is the unfortunate problem with models of higher and higher complexity which sacrifice physical common sense in order to model everything, and then someone forgets to characterize something correctly and puts in some number.
I would use the SPICE2 model in this case. You obviously know how to switch it with the noimod parameter.
Best regards,
Vivek
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