I am trying to use ADRF6650 internal LO downconverter.
For the REF_IN(pin number 45), I put 10[MHz]
On the datasheet, I need to put 50[ohm] resister and AC couple capacitor close to the pin.
However, I put those resistor and capacitor with some distance, 5cm?, unfortunately.
I have trouble with the lock of PLL, this resistor and capacitor position can be the reason of trouble?
Any answer will be greatly appreciated.