Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New mathematical model better describes transistor behavior

11.05.2005


Penn State and Philips researchers have merged the best features of their respective approaches to produce a new mathematical model that describes the behavior of the MOS transistor in a wide class of integrated circuits found in the majority of electronic devices from computers to digital watches to communications systems.



Certain circuits can only be simulated accurately using the new approach, known as the PSP model, including passive mixers used in mobile phones to increase battery life and current-ratio based circuits used in analog to digital converters.

In addition, PSP has better RF capabilities than the existing models and accurately predicts transistor behavior up to frequencies well above 50 GHz.


Dr. Gennady Gildenblat, professor of electrical engineering, leads PSP development at Penn State. He says, "Fabricating integrated circuits is expensive and improving them by trial and error adds significantly to that expense. Accurate models that provide detailed mathematical descriptions offer engineers the chance to do science-based engineering and to get it right the first time." Gildenblat will detail PSP in an invited talk, "Introduction to PSP MOSFET Model," at the Nanotech 2005 International Conference, May 10, in Anaheim, Ca. His co-authors are X. Li, H. Wang and W. Wu, electrical engineering graduate students at Penn State, and R. van Langevelde, A. J. Scholten, G. D. J. Smit and D. B. M. Klaassen, Philips Research Laboratories, The Netherlands.

The key variable in the PSP model is surface potential at the interface between the silicon and silicon dioxide in the transistor. Since PSP is based on this physical variable, it yields better predictions of the behavior of integrated circuits than is possible with alternative models, especially when devices are miniaturized or are operated at their limits, the developers say.

Models, such as PSP, which describe transistors in a mathematical way, are used in circuit simulators. For example, PSP has been tested on a simulation of a passive mixer, a surprisingly difficult problem that Gildenblat and others only accomplished recently. In addition, PSP has been verified against measurements on transistors from various manufacturers, including those made with the latest technology.

All details of the PSP model are being made available on the Internet. Philips SIMKit software allows PSP to be directly coupled to many popular circuit simulators.

Speaking of the Penn State/Philips collaboration, Dr. Dirk Klaassen, research fellow at Philips Research, says, "Our cooperation brings together the best fundamental academic and pragmatic industrial knowledge and expertise on compact modeling. It directly ties our combined deep understanding of the physical behavior of MOS transistors onto the requirements set by IC designers and the application areas most relevant to them."

PSP is being submitted to the Compact Model Council (CMC) as a candidate for standardization. The Council represents 27 major semiconductor companies that use models. The Council chooses candidates for standardization based on the technical needs of its members. The CMC is scheduled to select a new model for CMOS transistors later this year.

Barbara Hale | EurekAlert!
Further information:
http://www.psu.edu

More articles from Power and Electrical Engineering:

nachricht Robot on demand: Mobile machining of aircraft components with high precision
06.12.2016 | Fraunhofer IFAM

nachricht IHP presents the fastest silicon-based transistor in the world
05.12.2016 | IHP - Leibniz-Institut für innovative Mikroelektronik

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

NTU scientists build new ultrasound device using 3-D printing technology

07.12.2016 | Health and Medicine

The balancing act: An enzyme that links endocytosis to membrane recycling

07.12.2016 | Life Sciences

How to turn white fat brown

07.12.2016 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>