Open-loop gain of Op-amp - LT6015
ConfusedCheese, here is a simple method for simulating the loop gain for an operational amplifier with feedback.  This simulation scheme provides DC feedback and a stable operational point (for double and symmetrical voltage supply only!).


The dashed box contains the feedback factor, if any!. 
Without this box (direct connection to the inv. input) you simulate the open-loop gain Aol of the opamp only.
The loop gain is simply T(s)=V(node2)/V(node1). Of course, the frequency must be swept over the desired range (ac analysis).








simulate this circuit &ndash; Schematic created using CircuitLab