On Wed, August 15, 2012 7:05 am, M.L. wrote:
> I'm out of my element when it comes to practical PLL circuits.
> I'm considering using a PLL to create a 25MHz signal which should be
> phase locked to an input reference 20MHz signal. Do you know of some
> ICs that I could consider for this purpose?
> Most of the ones that I have seen quote significantly higher frequency
> values. Usually higher than 200 MHz.

Might be overkill in a really big way, but I believe a PIC32 could do
this.  I haven't verified it, but if you fed the 20MHz into the PLL on the
PIC32 and wrote a bit of code to configure the PWM. Once the PWM was
running, the PIC32 would be available for other things.  Other PICs may be
able to do this as well.

Matt Bennett
Just outside of Austin, TX
30.51,-97.91

The views I express are my own, not that of my employer, a large
multinational corporation that you are familiar with.
--=20
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