Lecture 6: Constant current bias in common source amplifier

This lecture covers the following topics.
* Recap of input signal swing limits in common source amplifier
* Gain reduction due to channel length modulation
* Variation in transistor properties
* Constant Vgs bias vs constant current bias
* Negative feedback loop to implement a 'smart battery' that provides Vgs to ensure constant current through NMOS even in the presence of transistor variations