My question concerns common source amplifiers (or common source with degenerative feedback) and their output impedance. From what I have read the output impedance, with the drain loaded with a resistor, is essentially the value of the drain resistor (drain resistor in paralell with the impedance looking into the drain).
If this is so, then how do I calculate the output impedance of a common source amplifier when the drain is loaded with a current source or current mirror?
Thanks,
SteveS
If this is so, then how do I calculate the output impedance of a common source amplifier when the drain is loaded with a current source or current mirror?
Thanks,
SteveS