Category: Hardware
Product Number: AD9747 , AD974
Hello!
Distortion occurs when AD9747 outputs square wave signals, and the higher the frequency, the more serious the distortion.
When the signal frequency is 1MHz, the oscilloscope waveform and spectrum are as follows.
It looks normal.
Next up is 5MHz.
From the oscilloscope observation, the edge of the waveform is slow, there is distortion, and there is clutter on the spectrum analyzer.
Finally, the signal output of 10MHz.
The oscilloscope observed obvious waveform distortion, and the clutter amplitude in the signal was high, which seriously affected the waveform quality.
May I ask, what is the cause of this situation?
What are the solutions?
Can this situation be improved by optimizing the register configuration of the AD9747? How to configure?
