ISL78113A AGND pin?

The ISL78113A datasheet lists pin 6 as "AGND", which is described as analog ground.  Is this is distinct from pin 1, which is labeled as PGND and described as "Power Ground".  AGND is not shown in the typical application schematic shown in Fig 1, and it is not mentioned anywhere else in the document.  The block diagram shows no connection to any functional blocks.

How should this pin be attached?  Is this simple another GND pin?