The data sheet suggests using a differential output stage for this DAC for best dynamic performance (distortion etc.). Figure 103 shows only the IOUTP output being used to create a single-ended output, though, with IOUTN simply grounded. This seems like a waste. Would the attached schematic be a better use of the differential DAC outputs?
In a separate thread Tguy recommended using Ifs = 4 mA and a 1 V common mode voltage for +/- 0.5 V swing with this DAC. This circuit uses an external CM of 1.0 V and gives me the +/- 0.5 V I want with only a +/- 0.25 V swing on the DAC outputs themselves. Is this preferred?
To use this circuit, should CML be left disconnected?
Maybe the AD9717 is okay after all the way I'm using it now, see attachment. I'm using a fully diff opamp to get an output of 1.0 +/- 0.5 V with the OUTP and OUTN DAC outputs at a fixed 1.0 V and IOFS = 2 mA. You think this is okay?