[time-nuts] Re: PICDIV stability

[ghf at hoffmann-hochfrequenz.de]

Am 2022-01-09 1:21, schrieb Bruce Griffiths:
> Yes, that post is full of misleading information.
> The TI document is irrelevant as the PIC based divider doesn't have
> non harmonically related signals using the same chip.
> All internal signals within the PIC are harmonics of the divided output 
> signal.
> The post did not distinguish between random jitter and data dependent
> jitter etc. Either the poster doesn't understand the finer details of
> frequency division or the post is intended to mislead.
> 

But the both the fundamental and the harmonics have gate delays
that may vary. That cannot be neglected, for the delays of the
fundamental even limit the operating frequency of the chip.

Nothing that cannot be healed by a contemporary 7474 look alike
clocked from the original source.


Bruce, your posts have something that my provider doesn't like.
He diverts them into the spam folder, I just found 3 or 4 of them.
No other timenuts posts are affected.

Cheers, Gerhard.