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Problem with shape of a generated AD9834 waveform

Question asked by LucaB on Mar 19, 2012
Latest reply on Mar 20, 2012 by musach

Dear Sir,

I am  having some problem with AD9834 waveform generator and it would be awesome  if you could help me to fix it. I am controlling the DSP by using  a PIC and , even if I  manage to rightly communicate with  it, the frequency of waveform generated is that expected, the shape is  wrong, strangely asymmetric (longer for half period and shorter in the other one). You can find as attachment an image of voltage drop on 200 Ohm load.   I have the same phenomena with both sine and triangular waves.   Do you have any idea about it? I look forward to hearing from you.

Best regards

Luca BelsitoWaveform.jpg