What is the circuit size complexity and / or circuit depth complexity of an op-amp?
This is for comparative purposes, so I'm really after a ballpark figure and any op-amp is fine (although the simpler circuit is better, as I guess I'm after a lower bound). My thoughts are that I would either count the transistors (I've found an op-amp design with 4 of them), but I want to know what the convention is. I'm a computer scientist rather than an electronic engineer, so I apologise if this is simple to work out, however I've not managed to find an answer with an internet search.
I'm actually after the circuit size / circuit depth complexity of a current-to-voltage converter (or transimpedence converter which I think will do the job) and that seems to use a resistor and op-amp in parallel, so I think I would count the circuit depth complexity of just the op-amp.
Please help.