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AD9859: SYNC_CLK has no output

Question asked by ThomasGal on Apr 29, 2015
Latest reply on May 4, 2015 by ThomasGal

Hello,

 

I'm a student from Belgium and I'm trying to use an AD9859 for my thesis project. I made my own PCB. As i don't manage to make it work, I decided to check the problem step by step. As Sync_CLK is not outputting anything, I suspect my clock reference to be wrong.    I'm using a clipped sinewave TCXO (http://be.farnell.com/fr-BE/txc/7z-26-000mbg-t/tcxo-gps-26mhz-2-x-1-6mm-clipped/dp/2096010 :

TXC  7Z-26.000MBG-T  TCXO, GPS, 26MHZ, 2 X 1.6MM, CLIPPED SINE)

as clock reference. As a student, I find it difficult to understand the clock reference section of the datasheet so I maybe made a mistake there. Can you please enlighten me?

 

Thank you

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