[time-nuts] Re: Analog Devices AD9901 phase comparator

[Azelio Boriani]

"The souped-up 4046 with backlash correction all seem to have gone." ->
time to translate them to VHDL too.

On Tue, Jun 4, 2024 at 2:53 PM Gerhard Hoffmann via time-nuts <
time-nuts at lists.febo.com> wrote:

> Am 2024-05-25 22:53, schrieb Bill via time-nuts:
> > The AD9901 is old. I used one in a 20 MHz loop about 20 years ago with
> > no problem.
> > However my testing was limited.
> >
> > I have two in dip packages ( 20 years old) that you can have.
>
> Oh, thanks for the offer, but I have enough of them in PLCC and DIP. :-)
>
> I had made a VHDL translation, strictly following the AD data sheet.
> Also included some prescaling and local 1pps generation.
> The execution vehicle was a Xilinx Coolrunner2 CPLD which is end of life
> now,
> so I need a new CPLD and it's a good opportunity to compare performance.
>
> The souped-up 4046 with backlash correction all seem to have gone.
>
> best regards, Gerhard
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