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AD9914 clock frequency

Question asked by pomn80 on Nov 20, 2014
Latest reply on Dec 4, 2014 by JLKeip

Hi all

The AD9914 REV.B datasheet had said to handle 4GHz frequency clock. Why this amount is reduced to 3.5 GHz?

My application is single tone with the best phase noise and SFDR. I have an ultra low phase noise 1GHz OCXO. Obviously, it is easier to make 4 GHz signal than 3.5 GHz. If I drive the Ad9914’s REF_CLK input at 4GHz, what will be happened?