[time-nuts] injection locking crystal oscillator

[Thomas S. Knutsen]

Hello.

I have a device that consists of a PLL, that has as its reference a
10MHz crystal.
What I would like to do, is to inject this with 10MHz from a GPSDO,
when that is available, and to use the internal crystal when that is
not available.

Would it be feasible to just connect it to one leg of the crystal
oscillator with a small capacitor, and with that get injection
locking?
The crystal oscillator is on chip, there is a couple capacitors that
allow for frequecy adjustments, other than that, I know nothing about
what is on the chip. The PLL is SP5769.

Br.

Thomas

-- 
With Best regards, Thomas S. Knutsen.

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