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AD9910 Multiplier Issue

Question asked by adi13 on Mar 6, 2016
Latest reply on Mar 8, 2016 by adi13

Hello,

 

I've been trying to use the multiplier of AD9910. When running the evaluation software, I check the multiplier enable, set the multiplier to 5x and provide the dds with an input frequency of 100 mhz from a signal generator. My problem is the the dds does not output accurate frequency. I require a 40 mhz output, the dds outputs around 36 mhz. Am I missing something in the multiplier setting? Should there be any hardware changes on the evaluation board to use the multiplier?

 

Thank you.

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