I'm using DAC902 @ clock rate of 40 MSPS. The DAC is generating a 1 MHz sine wave. when I measure the output of the DAC, I get the following noisy sine wave:
I'm not sure what's the reason behind this. I did notice that in the datasheet, they didn't mention a clock rate of 40 MSPS, so I'm not sure if that's the reason behind the problem.
Below is a picture of the schematics:
Is it normal for the output of the DAC to be that noisy?
Can anyone give me any suggestions?
Thanks