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Output of AD9834

Question asked by Gennady on Oct 30, 2012
Latest reply on Nov 27, 2012 by musach

Hi

I tried to get output from AD9834 by using App. Note 1070.

I provide MCLK for AD9834 from microcontroller and frequency is 49MHz.

Schematic you can find in attached files.

 

Then I sent this sequence of words:

2100 415C 51B6 9A1F 8FAC C000 E000 2000

which should give me 13.56MHz and 12MHz in the ouput.

I attached also all signals which i send via SPI

 

But, as a result, i have in the output very distorted signal with frequency of MCLK.

 

Could you advise something?

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