Re: SpectreRF for simulating PLLs?

Andrew,

Thanks for the help. Yes, it has been a while and it is a delight to still
be able to use this group as the fantastic resource it is.

In case you wondered, Andrew, the full custom chip I was working on when I
was a very active member of this group before was a great success, and I am
now working towards another (a PLL if you hadn't guessed yet!).

Keep up the good work!

Cheers

Reuben


"Andrew Beckett" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Reuben,
>
> It's been a while! I was only thinking the other day I'd not seen any
posts
> from you for a while.
>
> Check out http://www.designers-guide.com as there is a good paper on
> PLLs there (for phase noise/jitter). This talks about using phase-domain
> modelling of a PLL having characterised it with SpectreRF.
>
> There's also some stuff on the PLL library documented in cdsdoc.
>
> Simulating it directly in SpectreRF is not so easy, but check Ken
Kundert's
> paper above as it describes the issues well (not surprising since he's
> the architect of Spectre and SpectreRF).
>
> Regards,
>
> Andrew.
>
> On Tue, 25 Nov 2003 10:08:00 -0000, "R Wilcock"
<[EMAIL PROTECTED]>
> wrote:
>
> >Hi all,
> >
> >I was wondering if anyone had had any success or could suggest a method
for
> >using SpectreRF to derive a frequency response for a PLL? What I want is
a
> >loop (open and closed) gain versus frequency plot.
> >
> >Cheers
> >
> >Reuben
> >
>
> --
> Andrew Beckett
> Senior Technical Leader
> Custom IC Solutions
> Cadence Design Systems Ltd