This sheet is used to design a low speed Miller Operational Amplifier, using the technique explained by
Willy Sansen in his book "Analog Design Essentials" chapters 1 and 6, main slide 0629.
PMOS input devices are chosen as these normally have better matching and lower noise. There is a good explanation of why this is generally better in
Analog integrated Circuit Design, Johns, Martin, page 232
Cc in the following schematic is replaced with Cc and Rc in series.
Design Inputs yellow; BSIM inputs blue; outputs green