SLLS853F August 2007 – January 2015 DAC5682Z
It is recommended that the device be powered with the nominal supply voltages as indicated in the Recommended Operating Conditions.
In most instances the best performance is achieved with LDO supplies. However the supplies may be driven with direct outputs from a DC-DC switcher as long as the noise performance of the switcher is acceptable.
For an LDO power supply reference, it is best to refer to the DAC5682zEVM.