PLL Experiments

[Ric Miller]

> Have any others of you done this kind of thing?  I am interested in 
> frequency multiplication, particularly by 3.  That would allow me to 
> generate a perfect fifth without having to dedicate a VCO to that.
> 
> - Scott

You've probably already thought of this, but, for what it's worth:

You could use a decade counter, picking off the Divide by 3 from it's 3rd 
step.  Of course using this method, you'd only have a square wave output, 
unless you used a comparator to obtain a pulse wave.

Ric