Hi Kevin,
Having the circuit working fine with the DAC, I tried replacing the DAC with another same one (just because I need two in my system).
This second one is behaving strangely. I only get a non-stable ~-2V output while sending exactly the same thing as the capture shown above. I've tested continuity for all pins and their traces and everything looks fine in terms of soldering. The DAC is new. I've soldered it by reflow, just as I did with the other one. Any suggestions? This DAC is driving me nuts.
Thanks again.
Abel.