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AD9642 hairy sinewave

Question asked by mifokovac on May 11, 2016
Latest reply on May 17, 2016 by mifokovac

Hello,

 

I have problem with AD9642 digital outputs, the sinewave looks hairy (enclosed picture). I've no idea, what's the problem. The schematic is like evaluation board schematic. I try to shift the phase of DCO clock in FPGA, also I try to compose the bits in many different manners. But always shows the hair in sinewave. Do you have an idea? Clock ?, grounds ?, bit composing?

Thanks.

 

Regards,

Michal

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