When deriving the transfer functions of common OPAMP circuits, like an inverting amplifier we begin with:
VOUT=A×(V+ − V-)
A two stage operational amplifier for example, could be considered as a second order system. The equation above only signifies the DC gain of the amplifier.This equation does not account for the dependency of gain of opamp on frequency.
Shouldn't the transfer function of OPAMP's internal circuitry be considered for accurate analysis?