I assume that the switch shares the supply voltage with the ADF4350(3.3V +/-10%) and the TCXO signals are single ended. If that is the case, you can use any of the following switches: ADG619/719/749/779.
For diferential TCXO signals the ADG636…
The AD9552 was never intended to have two input references in this manner.
I have a few alternatives:
1. The AD9553 has dual inputs, but is an integer-N PLL.
2. The AD9551 has dual inputs, but Fin should be at least 104 MHz for it to…