> [...]
> > PWM thru an RC (analog out), then to
> >a
> >Voltage-to-Frequency convertor. (Looking for ~0 to 5000 hz
> [...]
>
> Speaking of phase noise, it's going to be hard to keep the PWM frequency
> from inducing a little FM on the output frequency.  When you change the
> PWM setting, the output frequency will not change instantanously.  It
> will take a long time to reach the final value due to the exponential
> settling of the control-voltage filter.
>
> These issues may not be problems though, depending on the requirements of
> whatever is receiving the ouptut frequency.
>
The solution is turning out to be in hardware (V/F Convertor)
Maybe I should make my own DDS or NCO?
I could use a stand alone PIC that uses the same clock as my MAIN PIC.

There are a couple of ways to have the 2 PIC's talking.
Ideally,  the frequency output I desire is to be glitchfree, and
free-running,  with the ability to be constantly updated.

Any stabs at this idea?

-Dave Celsnak