I need to design ADF4350 synthesizer that can use either one of two TCXOs. Do you have any switch that can do this job?
The connection is as follows:
TCXO1 ----->|Switch |--------->ADF4350
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 ADG636/736/787/772 can be used.
Thank you for your help. My switch shares the supply voltage with the ADF4350(3.3V +/-10%) and the TCXO signals are single ended.
Since ADG619/719/749/779 are analog switch, they should not add jitter for the TCXO reference signal, right?
Thank you in advance.
ADG619/719/749/779 analog switch not add jitter for the TCXO reference signal.
PSB will be carefully created only.
The analog switch is not jitter free, but if you choose a device with the lowest ON resistance, it will minimize the random jitter due to the noise introduced by the switch resistance. On the other hand, the bandwidth of the switch has to be sufficiently high to pass the signal with minimum distortion to reduce the amount of deterministic jitter introduced by the switch.
PSB is printed circuit board only .
Jitter is very-very low, as at passive component (as resistor with equal value ) Don't worry!