Re: MOS11 noise implementation in Verilog-A

Reposted for Sri:

> Just a side note on $freq. $freq i am assuming would be synonymous to
> $abstime in transient. I am assuming $abstime would return 0 in a AC
> analysis. What would be good to have a generic function - something like
> $domainval or $xval or something like that which would return either the
> time/freq/voltage depending on the analysis being performed.
>
> "Geoffrey.Coram" wrote:
>
> >
> >
> > Ilya -
> > I recall a discussion (don't recall the context) about writing
> > noise PSDs -- and thus the need to allow access to the small-signal
> > analysis frequency at which the noise analysis is performed.
> >
> > The main problem is in specifying what this "$freq" should do in
> > other analyses: should it only be allowed in noise expressions?
> > Are there other cases that one might think one wanted $freq in
> > a transient analysis?
> >
> > The "j" would be another odd beast; you'd like to restrict its
> > use to noise analysis, but I can imagine people wanting it for
> > complex filters or for constructing a signal with a quadrature
> > component.
> >
> > -Geoffrey
Received on Thu May 20 07:48:30 2004