[time-nuts] How to get 32.768KHz from 10MHz.
bruce.griffiths at xtra.co.nz
Wed Jul 23 17:42:21 EDT 2008
Another approach is to divide the 10MHz by 5^7 (78125) and then use an
injection locked multiplier chain to generate 32768 Hz from the
resultant 128Hz output.
It may even be possible to do the 256x multiplication using a single
injection locked 32768Hz injection locked multiplier.
When designed correctly the close in phase noise of an injection locked
oscillator is determined by that of the injection source whereas the
phase noise floor is determined by that of the oscillator being locked.
To optimise the performance the oscillator to be injection locked should
be designed to facilitate injection locking.
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