Basic analog design tutorials

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Contents

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,

cd ~/scratch
mkdir tutorials

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

# standard Cadence libraries
INCLUDE   $ID_DIR/../cds.lib

All the proposed tutorials will be carried out with a Cadence IC 6.1.5 technology-independent environment, as described in 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:

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" &

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

#!/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" &
chmod +x setup.csh
./setup.csh

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 here. This tutorial has been prepared by 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 here

A similar web tutorial can be found here and here

Creating symbols for your schematics

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

click here

The CMOS inverter

click 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 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: Luca Pacher - Apr 23, 2013