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Problem with output signal of AD9914

Question asked by _USER_ on Jun 2, 2015
Latest reply on Jun 14, 2015 by _USER_

Hi every body,

 

I have some problem to generate an output on ad9914 controlled through FPGA. In fact after configured the internal control register CFR, and write value of FTW,AMP and POW in profile 0, i do not have the same value in output.

For example: i write 0x0A101250 in FTW ; 0x402  in AMP and 0x1250 in POW to generate 98.26Mhz

At the output i have 271,41Mhz

I don't understand why?

Even when i change the frequency, the output change also not the same frequency .

 

I hope someone can help me

 

Best regards

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