I'm puzzled. What is the required relationship between the 500MHz signal and the 1.262MHz one? They aren't harmonically related. You could mix 500MHz with 501.262MHz to get 1.262MHz. Is that what you want?
Keith.
My thoughts exactly, Keith, or at least downmix to some convienent freq and then use a prescaler IC to get the final division and a TTL output
cheers
Dave
Can't you use a DDS to get the required frequency?
If it is divide by 396 I think I would use a synthesizer. I could be done with dividers but I think a synth is probably easier.
You are absolutely right. The DDS idea came into play, because the original question didn't clarify, if the intended output frequency involves a rational division factor. If it's the case, also the DDS output can be spectral pure, not containing spurious components, but not necessarily. With a usual binary accumulator, it wouldn't. It's a waste of resources anyway.I am surprised to see the DDS mentioned here.
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