Hi all,

I have some questions regarding the problems of chapter 7 of Allen's book <<CMOS Analog Circuit Design>>. My doubts are listed below:

1. In 7.1-1, how to find the SB voltages of M18, M19, M21, M22, I don't know how the author gets all these SB voltages?
2. In 7.2-2, the calculation method for VA and VB is a little bit strange for me, I can’t understand the method, why the author does it like that?

I will really appreciate any feedback and opinion.

Regards,
Terry