Announcement on BSIM3v3 (beta) Model Release 

Dear BSIM users,

First of all, I would like to thank all of you for your  comments and 
suggestions sent to us after we released the BSIM3v3 (alpha) in May.  In 
particular, we would like to thank Dr. Keith Green (TI), Dr.Chris Lyons(Analog),
Dr. Chune-Sin Yeh (NSC), Dr. Kartikeya Mayaram (AT&T), Dr. David Newmark 
(Motorola), Dr. Seamus Power (Silvaco), Dr.  Pratheep Balasingam (Metasoft) 
et al for their helpful comments, test results and kind encourangement  on 
the bsim3v3 model. 

We have considered your comments carefully and  improved our model further to 
try to  meet your different needs in circuit design.  We are releasing 
BSIM3v3 (beta) today. 

At the June 1st Sematech Compact Model Workshop,  several companies volunteered
 to test this release and report their findings at the Aug. 15 workshop. 
Therefore, we plan to make the final release of BSIM3v3 shortly after that date. We would like to get you help in starting the testing of today's beta release
 as soon as possible. Please let us know any problems and suggestions as you 
discover them , so that we may solve the problems before Aug. 15th
 as well.

Several improvements have been made in the beta version of BSIM3v3 relative to
the alpha version:
 
(1) The Vbs bias dependencies of Vth, Rout, Ueff and  parasitic Rds  have been
 improved, 

(2) A new temperature dependence of Rds is introduced to improve the  accuracy 

(3) Single-expression capacitance  model  is introduced,

(4) Several user's options have been added: 

(i)The Non-quasi-static (NQS)  charge  model  is included as a  user option , 

(ii) The poly-silicon depletion effect  option has been included in both I-V 
and C-V models,

(iii) The substrate current model is implemented, and can be turned off 
according to the need of the user,

(iv) A binning option is provided for those users who want even better accuracy
 for a  wide range of W and L.


The  source code and manual of the bsim3v3 (beta) have been put on 
 the FTP site. You can  get  them by FTP according to the instructions enclosed
 in  this letter.  

Thanks again for your kind support and encouragement  of the BSIM modeling
 research. I hope you can send  us your suggestions and comments continuously 
so that we can  make the final release soon.


Best Regards,


Chenming Hu

--------------------------------------------------------------

                 INSTRUCTIONS of FTP BSIM3V3 FILES:


The source code and manual for the BSIM3v3 (beta) model are
now available by FTP. The instructions on how to ftp the files is given below.


The BSIM3 anonymous ftp site contains the following files.

  bsim3.tar.Z - a compressed and tarred file of the BSIM3v3 (beta)
                source code directory
  v3manual.tar.Z - a compressed and tared postscript file of the BSIM3v3 manual 
 

This is the procedure to obtain these files.
  1.  ftp rely.eecs.berkeley.edu
         
or
      ftp 128.32.156.10

  2. login in as "anonymous"
  3. Enter your email address  as the password.
  4. Type "binary"
  5. Change directory to /pub
  6. Use "get" to obtain the files.

Once bsim3.tar.Z is in your directory, type the commands

  uncompress bsim3.tar.Z
  tar -xvf bsim3.tar

and a directory /tarfile will be created containing all of the BSIM3 files.

To print a postscript file, type

  uncompress v3manual.tar.Z
  tar -xvf v3manual.tar
and a directory /psfile will be created containing all of the psfiles
for the manual.

  lpr *.ps


mailing list address:  bsim3list@rely.eecs.berkeley.edu
subscribing to mailing list: yuhua@bsim.eecs.berkeley.edu


World-Wide Web home page has been created at

http://rely.eecs.berkeley.edu:8080/bsim3www/bsim3.html

It contains the files available from the BSIM3 anonymous ftp site as well
as official BSIM3 news (which will also be posted to the BSIM3 mailing list).