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How to drive multiple PLL REFin pins with a single TCXO ?

Question asked by kubilaysavci on Mar 28, 2013
Latest reply on Apr 24, 2013 by DSB

I would like to generate 1Ghz, 900Mhz and 250 Mhz sine wave using three ADF4351.


First of all, do I have to use sine wave or clipped sinewave TCXO as reference to get RF(sinewave) output from ADF4351 or is it ok to use CMOS and HCMOS TCXO ? Does it generate sinewave at the output no matter what the ref clock is (square/sine wave)?d,

 

Second, If I have to use clipped sine TCXO, how can I drive three ADF4351 synthesizer ICs, Would it work if I split the TCXO output into 3. or if I need something like a buffer is there any buffer for clipped sinewave?

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