SLDS231 August 2018 PGA305
PRODUCTION DATA.
Use the DAC_RATIOMETRIC bit in DAC_CONFIG to configure the DAC output in either ratiometric-to-PWR mode or independent-of-PWR (or absolute) mode.
NOTE
In ratiometric mode, changes in the VPWR voltage result in a proportional change in the output voltage because the current reference for the DAC is derived from VPWR.