Hi EZT,
What u mentioned is correct. ALthough I am not aquinted with HSPICE, I think the noise model u are talking about is correct for all simulator. But I have a confusion here.
-->WHAT THE NOISE ARE U TALKING ABOUT?
If it is the noise from device, then perhaps u r right. But probably the concerned noise is the QUANTISATION NOISE, which straightway comes from the (Vin-Vout), as is the case for ADC.
Please rectify me if I am wrong.
One more question I have here. Once the spectrum is got, how to calculate the SNR,SINAD,ENOB etc. I got some theoritical explanations of the same but not very confirmed of the same and yet not have done in hand. Thus it would be of great help if u gve some light on the matter and also give some good reference on the same.
Regards
sankudey