Tool/software:
So when looking through the parts on the part selection shown below:
It shows the AFE639D2 as a 2 DAC channel device, but in the datasheet it only has one DAC output, it has a comparator input and a feedback but no second DAC output:
There is only one output (OUT0), so there seems to be some kind of issue there, whether the datasheet is not correct or the webpage is wrongly advertising the part.