ADC_INx pin, current limit for MOD5441x module

[svobodacegelec]

I expect that voltage limit for ADC_IN0 to ADC_IN7 will be –0.3 to +3.6 according to datasheet for uP.
Anyway there is a possibility to also limit current to the pin as protection against over-voltage.
If I understand well maximum current not to disturb the ADC function is 3mA (IADI, table 26 in datasheet).
So it means to select appropriate resistor. On the other hand there is parameter input impedance (XIN, table 26 in datasheet)
as low as 2K. It is really input impedance which will form voltage divider with protection resistance?

Is there any recommendation or example about ADC connection?