I've been reading Ravazi's book Design Of Analog CMOS Integrated Circuits.
regarding the end of chapter 3 (Single-Stage Amplifiers), the book presents the folded cascode (Page 90)



I had a question, regarding how to determine the state of transistors in large signal analysis. I wrote it in detail here

 

what are you trying to understand here?because, we almost assume all MOSFET are in staruation mode! except in weak inversion