3.4.3 ADCC Low-Pass Filter Mode
The Low-Pass Filter mode can be used in systems where the control actions require a more stable signal from the input sensor. For example, in the case of a smartphone, while setting the brightness of the screen, the output of the ambient light sensor should be low-pass filtered.
Refer to AN2749 - Using PIC18F26K42's 12-bit ADC² in Low-Pass Filter Mode to understand the ADCC LPF mode in detail, which can be used for filtering noisy DC and AC signals.