gmid methodology

soupdawn

In order to clearly introduce the fundamentals, originality and potential of our methodology,
as well as its requirements, the first chapter of this thesis will focus  on  an  elementary  case  of
study,  i.e.  the  synthesis  of  the  intrinsic  MOS  common-source  gain  stage.  This  nevertheless
practical example will enable a complete illustration of the four main  aspects  combined  in  our
approach:
- the opamp synthesis technique based on the transconductance-to-drain current ratio of the
MOS transistor, the so-called gm/ID concept,
- the need for the continuous functional  modelling  of  the  analog  transistor  characteristics
used in our methodology;
- the derivation of a small-signal analytical model of the amplifier performance from a so-
called symbolic analysis;
- the MATLAB implementation of the  MOSFET  and  amplifier  functional  models,  whose
adequacy and potential regarding our purpose will be discussed.
In the second chapter, we will present the different continuous  MOS  models  used  in  this
work:  the  charge-sheet  and  EKV  expressions  and  parameters  for  both  bulk  Si  and  SOI
technologies.  An  original  physical  transition  linking  the  two  models  will  be  presented.  The
modelling and the universality of the transconductance-to-drain current vs normalized current
characteristics  will  be  emphasized  and  supported  by  measurements   on   bulk   and   SOI
MOSFETs.
Chapter 3 will discuss the limitations of EKV-like models regarding the impact of threshold
voltage and mobility approximations on the MOSFET  distorsion  performance,  simulation  and
modelling.
The  following  chapters  will  exploit  our  methodology  and  model  implementations  on
MATLAB in order to discuss the optimal design of CMOS  operational amplifiers of increasing
complexity. Chapter 4 will focus on the classical second-order opamp architectures: single-stage
and Miller OTAs. Experimental opamp SOI  implementations will support the analysis. Chapter
5  will  finally  address  the  synthesis  of  a  complex  third-order  architecture:  the  gain-boosted
folded-cascode opamp.


Chapter 2  is not included.

keqihu

Thanks.

keqihu

Xie xie.

socdesign2008

thanks!!!!!!!

yifei

thanks thanks!!!!!!!!!!!!!!!!!!!!!!!!!!!

kennyg8304

thanks a lot!!!!!!!

memsmems

shihaowenzhang

nltc

感谢楼主，正在学习Gm/Id的设计方法。

mickey1999

谢谢了楼主

dalianmao995

ganxie  lz  lz hao ren