I am currently trying to improve my understanding of analogue IC design and my textbook kind of brushes over this problem.
It is made quite clear that a low output impedance is desired so that the output voltage and current are mostly spread across the load impedance. However, in design (specifically in small signal analysis) a very common way of improving the gain is to increase the output resistance (since transistors amplify by means of the output current).
I understand that both can be achieved in multi-stage devices ex. with a buffer amplifier stage at the output.
My question is: how do I reconcile these design goals, particularly in single transistor circuits?