3.2.4 DAC as ADC Internal Channel

The DAC of the PIC16F17146/PIC16F18146 family of microcontrollers has a provision to connect its output internally to the ADC input channel.

The 3.1.1 AC Voltage Measurement Using Differential ADC section illustrates the usage of DAC to add an offset voltage for making the analog input voltage compatible with the ADC measurement range.