====== Basic analog design tutorials ======

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== Contents ==

   * Introduction
   * Environment setup
   * Tutorial 1 - Basic NMOS characteristics
   * Tutorial 2 - Common-source amplifier
   * Tutorial 3 - The CMOS inverter
   * Tutorial 4 - A two stage OPAMP with Miller compensation
   * Tutorial 5 - ...
   * [[vlsi:analog_schematic_tutorials#third_party_video_tutorials|Third party video tutorials]]

**Keywords:**



===== Introduction =====

Completely **technology-independent** tutorials, importing simple SPICE transistor models
that you can find on Web and in textbooks


===== Environment setup =====

Create a working area, 

<code>
cd ~/scratch
mkdir tutorials
</code>


Move into your working area and create a basic ''cds.lib'' file with your 
preferred text editor and put the following lines

<code>
# standard Cadence libraries
INCLUDE   $ID_DIR/../cds.lib
</code>


All the proposed tutorials will be carried out with a Cadence IC 6.1.5 
technology-independent environment, as described in 
__[[vlsi:computing_cdsterm#start_a_vanilla_environment|Start a vanilla environment]]__.

Move into your working directory ''~/scratch/tutorials'' and source by hand the 
''/usr/local/config/cds_config/CdsIC_615.rc'' Cadence IC configuration script: 

<code>
setenv IC_DIR /usr/cadence/IC_6.1.5
source /usr/local/config/cds_config/CdsIC_615.rc
xterm 
<code>

Put a ''setenv MANPATH "" '' in your '.cshrc'' file, then


<code>
xterm -T "Cadence tututorial" &
</code>


To save time you can put these instructions into an executable ''setup.csh'' 
csh script, 

<code>
#!/usr/bin/csh

setenv IC_DIR /usr/cadence/IC_6.1.5
setenv MANPATH ""
source /usr/local/config/cds_config/CdsIC_615.rc
xterm -T "Cadence IC 6.1.5 vanilla environment" &
</code>


<code>
chmod +x setup.csh
./setup.csh
</code>

===== Basic NMOS and PMOS characteristics =====

Step-by-step tutorial

this is a //**PDK-independent**// tutorial ( using a standard transistor-model! )

You can access the tutorial [[vlsi:workbook:analog:tutorials:mos_characteristics|here]]. This tutorial has been prepared by 
[[pacher@NOSPAMto.infn.it|Luca Pacher]].


\\
Similar tutorials using Cadence can be found at:

//[[http://cmosedu.com/videos/cadence/cadence_videos.htm]]// from //cmosedu.com// (by J. Baker, web page + training video)  \\
//[[http://eda.engineering.wustl.edu/wiki/index.php/Tutorials:Cadence:CreatingSchematicTransistorIV]]// from //eda.engineering.wustl.edu// \\
//[[http://vlsi.engr.uidaho.edu/#idaho-cadence]]// from //vlsi.engr.uidaho.edu// (training video, look at //Cadence MOSFET Characterization//)




===== Common-source amplifier =====

click [[vlsi:workbook:analog:tutorials:common_source| here ]]


A similar web tutorial can be found [[ http://www.ece.umn.edu/help/cadence/example.html | here ]]
and [[ http://www.es.isy.liu.se/courses/TSTE80/download/laboratory.manual.Cadence.TSTE80.07.pdf | here ]]


===== Creating symbols for your schematics ====

Un semplice esercizio, crere un **ideal OPAMP** using a **voltage controlled voltage source (vcvs) **


click [[vlsi:workbook:analog:tutorials:symbol| here ]]

===== The CMOS inverter =====

click [[vlsi:workbook:analog:tutorials:inverter| here ]]


\\
Similar tutorials using Cadence can be found at:

//[[http://cmosedu.com/videos/cadence/cadence_videos.htm]]// from //cmosedu.com// (by J. Baker, web page + training video)  \\
//[[http://eda.engineering.wustl.edu/wiki/index.php/Tutorials:Cadence:CreatingSchematicInverter]]// from //eda.engineering.wustl.edu//

===== A two stage OTA with Miller compensation =====

click [[vlsi:workbook:analog:tutorials:miller_ota| here ]]


===== Third party video tutorials =====

Many different **video tutorials** can be found on the Web about
schematic entry and simulations with Cadence IC. 

\\
Very useful links are:

//[[http://vlsi.engr.uidaho.edu]]//  from //vlsi.engr.uidaho.edu// (by A. Kanago) \\
//[[http://cmosedu.com/videos/cadence/cadence_videos.htm]]//  from //CMOSedu.com// (by J. Baker)

====== ======
\\
----

Last update: [[ pacher@NOSPAMto.infn.it | Luca Pacher ]] - Apr 23, 2013

~~NOTOC~~