A question about op amp design

[greentree]

Hi all
I want design an internal circuit of a op amp ( a simple op amp ) . and it is my first design at this style .
Can any body guide me ?
Thanks in advance

 

[kak111]

Start with these very basics....

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Op-Amps Circuits

Op-Amp Basics Part III (Internal Circuit) - YouTube

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Camenzind: Designing Analog Chips ....242pages
Copyright 2004, 2005 Hans Camenzind.
February 2005
This book is can be downloaded without fee from
Designing Analog Chips by Hans Camenzind
Re-publishing of any part or the whole is prohibited.
http://www.designinganalogchips.com/_count/designinganalogchips.pdf