Some questions about RMS-DC

In my application, I want to use your AD8436 to measure the voltage value of the source.
But the source can output both AC(50Hz) or DC.
So If the source output DC to AD8436,can AD8436 still keep working ? Or may can damage AD8436?
In my view if I Input DC source to AD8436 it won't output anything. 
Hope you can help me.