The ITRS, 2013 Edition is now online.

 The link below will take you to the site for the summary information
http://www.itrs.net/Links/2013ITRS/Summary2013.htm

 For the full edition details, follow this link
http://www.itrs.net/Links/2013ITRS/Home2013.htm

[read more...]

Possible VTH Variation Sources

with 16 nm FinFET devices, the nature of the VTH variation changes.  On planar CMOS, random dopant fluctuations (RDFs) had the biggest influence. 

Possible VTH Variations

Ideal FinFETs have no doping, and therefore no RDFs.  However, this only works for low voltage operation.  We also need high-speed devices, which requires multiple threshold voltages (Vth's).  For FinFETs, this requires doping leading to RDF variation.  

[read more at DeepChip ...]

New IJNM Paper

 
Open-source circuit simulation tools for RF compact semiconductor device modelling (Invited Paper)
 
Wladek Grabinski (Editor), Mike Brinson, Paolo Nenzi, Francesco Lannutti, Nikolaos Makris, Angelos Antonopoulos and Matthias Bucher
 
Keywords:
CAD; GNU; Qucs; QucsStudio; ngspice; compact modelling; EKV3; RF; MOSFET; Verilog-A
 
Article first published online: 18 MAR 2014 DOI: 10.1002/jnm.1973

website http://www.tcad.com is up and running

The www.tcad.com website promoting open source Technology Computer Aided Design and posting related news is up and running. Among other news there is also update of the DEVSIM Open Source TCAD Simulator which is available for download at SourceForge, now.  Packages are available for:

• Mac OS X Mavericks
• Red Hat 6.5
• Ubuntu 12.04

For more information about the project, including source code availability, please visit DEVSIM webpage. Additional resource are also available at the TCADCentral 

[source]

Free And Open Source Simulator Software For Engineers

Free And Open Source Simulator Software For Engineers

0. Qucs
Download Link: http://qucs.sourceforge.net/download.html
Supported OS: Windows, Linux, Mac OSX
License:  Qucs is released under the GPL license and so it is free for free programmers and users !
Qucs stands for Quite Universal Circuit Simulator. So far Qucs is not yet finished, but it is already packed with features. Take a look at the screenshots to get a feel for what it can do.

1. CEDAR
Download Link: http://sourceforge.net/projects/cedarlogic/files/latest/download
Supported OS: Windows
License: Freeware
CEDAR LS is an interactive digital logic simulator to be used for teaching of logic design or testing simple digital designs. It features both low-level logic gates as well as high-level components, including registers and a Z80 microprocessor emulater

2. Logisim
Download Link: http://sourceforge.net/projects/circuit/files/latest/download
Supported OS: Windows, Linux
License: Freeware
Logisim is an educational tool for designing and simulating digital logic circuits. With its simple toolbar interface and simulation of circuits as you build them, it is simple enough to facilitate learning the most basic concepts related to logic circuits.

3. FreeMat
Download Link: http://sourceforge.net/projects/freemat/files/latest/download?source=files
Supported OS: Windows, Linux
License: GPL
FreeMat is a free environment for rapid engineering and scientific prototyping and data processing. It is similar to commercial systems such as MATLAB from Mathworks, and IDL from Research Systems, but is Open Source. FreeMat is available under the GPL license.

4. Logic Gate Simulator
Download Link: http://sourceforge.net/projects/gatesim/files/latest/download
Supported OS: Windows
License: GPL
Logic Gate Simulator is an open-source tool for experimenting with and learning about logic gates. Features include drag-and-drop gate layout and wiring, and user created "integrated circuits".

5. Maxima
Download Link: http://sourceforge.net/projects/maxima/files/latest/download?source=recommended
Supported OS: Windows
License: GPL
Maxima is a fairly complete computer algebra system written in Common Lisp with an emphasis on symbolic computation.

6. Ngspice
Download Link: http://sourceforge.net/project/showfiles.php?group_id=38962
Supported OS: Windows, Linux
License: GPL
Ngspice is a mixed-level/mixed-signal circuit simulator. Its code is based on three open source software packages: Spice3f5, Cider1b1 and Xspice. Ngspice is part of gEDA project, a full GPL'd suite of Electronic Design Automation tools.

7. Qfsm
Download Link: http://sourceforge.net/projects/qfsm/files/latest/download
Supported OS: Windows, Linux
License: GPL
A graphical tool for designing finite state machines

8. QSapecNG
Download Link: http://sourceforge.net/projects/qsapecng/files/latest/download?source=directory
Supported OS: Windows
License: GPL
QSapecNG is a Qt-based symbolic analysis program for linear analog circuits. In fact, it consists of two indipendently parts: the SapecNG framework engine, and the application gui QSapecNG.

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