Hello,
My customer has a question about DAC38J8x.
They want to it as DDS.
Input Data is constant and upconvert with digital mixers and NCO in DAC.
They evaluated it by using EVM.
They found some spurs on the output spectrum.
It is not problem but they want to know the spur mechanism.
[Q]
Please tell me the spur mechanism.
They want to know where is the spur sources and the mechanism.
I want you to tell me if there is the document which can explain it.
The example of observed spurs is as follows.
<Conditions>
fs = 2042.88MHz
fout = 500MHz
sif_dac_ena=1
sif_dac=7FFF
Best Regards,
Hiroshi Katsunaga
