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AD9959 5kHz bad output waveform

Question asked by andiw on Jan 19, 2017
Latest reply on Jan 20, 2017 by KennyG

Hey Folks,

 

I have a Problem with my AD9959 Evaluation Board. If I generate a single tone sinusoidal waveform with 5kHz the output waveform is not really a sine wave (one can clearly see this on a scope) and the amplitude goes down by orders of magnitude in comparison to a few MHz output. 

I use the DAC filter out SMA pin of the board. Would it help to use the unfiltered output or is there a general lower limit for the output frequency of the board?

The board is clocked with 500MHz by an external function generator.

 

Thank you and best regards

Andreas

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