Output voltage of op-amp in open loop configuration
What is the output voltage of op amp in open loop configuration when voltage in inverting input is greater than the one in the non-inverting input?


The output will swing as far negative as it can go.


  Is there a technical term for this output voltage?


Saturation voltage.


  Do datasheets refer to it?


Yes. Maximum and minimum output voltage. With common op-amps this is 1 to 3 V from the supply rail. For "rail-to-rail" op-amps it can be close to zero at low currents.