[time-nuts] 10 MHz -> 16 MHz

Gerhard Hoffmann dk4xp at arcor.de
Sun Sep 30 08:15:09 EDT 2018



Am 30.09.2018 um 06:15 schrieb Hal Murray:
>> What's a clever, simple, reliable (pick 2 of 3) way to get 16 MHz out of 10
>> MHz? Low phase noise isn't a big requirement and jitter doesn't need to be
>> sub-nanosecond. The main requirement is perfect cycle count accuracy. This is
>> for driving a 16 MHz microcontroller from a 10 MHz Rb/Cs/GPSDO. 10 MHz input
>> is likely sine; 16 MHz output is 3v3 or 5v CMOS.
> There should be a PLL chip that includes the M and N dividers, but I'm not
> familiar with that area.

Use this for f * 16:

< 
https://www.digikey.de/product-detail/de/on-semiconductor/NB3N3020DTG/NB3N3020DTGOS-ND/2003319 
   >

and a 74LVC for / 10.

The NB3N3020 could do *1.6 directly, but only for input frequency > 25 MHz.

regards,
Gerhard



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