Replace 28MHz clip-lead with PLL

Question

Replace 28MHz clip-lead with PLL

Opened this issue 3 years ago · 1 comments

Clip leads are notoriously risky.

A 4046 could be used to regenerate the 28MHz clock from a 7 or 14MHz source. There seem to be a few options for the clock source, CDAC is probably the best one from Denise. A simple RC with a pF varicap ought to allow for tuning of the clock if there's a problematic phase shift, but I doubt it's needed.

Answer 1 · 2022-03-10T17:31:16.000Z

Sorry for the late reply... I wasn't getting notifications of opened issues.

Thanks for this. I'll look into it for the improved version of the board.