I have built a function generator using an AD9833 board, using the schematics found here. The circuit seems to work well, but the square waveform that it outputs isn't great and there is some overshoot in the rise and fall of each transition. I was wondering if anyone can suggest what the problem might be? I know it's difficult to say but any suggestions on how to fix this would be welcome. Below are a bunch of pics from my scope and a photo of the build.
As requested, here are the waveforms as measured at the output of the op-amp. Interestingly the p-p voltage doesn't seem to vary with the output frequency. Here is the waveform at 1kHz:
And at 200kHz:
Here is a picture of the power board: