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