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LMX2820: phase synchronization issue between two PLL

Part Number: LMX2820

Hi,

I would like your opinion if this scenario will cause a phase synchronization issue.

I have one PLL LMX2820 to generate static freq e.g. 4 GHz. This PLL will be used as a sampling clock for DAC and ADC. the DAC will use it to generate a IF signal e.g, 1.5 GHz.

The other LMX2820 is used to generate LO signal with a range e.g. 6 to 8 GHz with certain step size.

This PLLs are planned to be synced using the PSYNC

If I mixed this IF and LO signal, do a transmit and receive. The received signal is downconverted using the same LO.

Would this scenario cause the phase to be unsync?

Best regards,

Andri Haryono