I doing the layout of LCT1407. In the application information of the data shee(http://www.analog.com/media/en/technical-documentation/data-sheets/1407fb.pdf), the recommended layout (Figure5) splits the copper polygons which are connected to the pin and pin 11 in the topper layer, and there are via used to connect these copper polygons to the ground plane. My question is how do address the ground plane? Do I have to split them ? Or, the ground plane is a whole plane without any cut?
In the data sheet, it says all the analog circuity should be terminated at pin 11, and all the digital circuity must be connected to the digital power supply common. How should I understand them?