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Oscillator as REFCLK for AD9956, SYNC_OUT seriously distorted

Question asked by antidigital on Mar 11, 2013
Latest reply on Mar 11, 2013 by DSB

I was using an oscillator to drive AD9956, but I found output at SYNC was seriously distorted.

IMGSRC_20130311201215_27.jpg

IMGSRC_20130311201107_74.jpg

The oscillator is 20Mhz, with a resistor of 24Ω.

DDS2.png

 

Is the Oscillator working OK? How can I fix this?

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