Using a recom dc/dc power supply and the common pin

Thread Starter


Joined Jul 20, 2012
I am looking at this power supply

Specifically the +/-12V version. I need to to just use to it power a split rail op amp. The overall system is powered by 24V. Since the +/-12V is isolated, I take it that I can not just connect grounds together so I can interface the two circuits? Is that what the common pin is for? Also, if I had an isolated supply, does AC coupling the AC signal take care of the interfacing problem as well? Or do they still need to share the same ground reference?