Title: A Methodology for Model-Free MOSFET Biasing and Sizing by Simulation in Linear IC Design
Speaker: Professor Uğur Çilingiroğlu, Yeditepe University
Date/Time: December 14, 2016 / 12:40-13:30
Location: FENS G032
A Methodology for Model-Free MOSFET Biasing and Sizing by Simulation in Linear IC Design
Abstract: Quantifying the bias conditions and channel dimensions of a MOSFET is probably the most fundamental but least formalized aspect of linear integrated-circuit design. A typical analog designer, overwhelmed by the multidimensionality of the design space and left without faith in the absurdly inaccurate textbook device models, usually performs it with simulated trial and error. Simulation is indeed the most accurate tool available for performance analysis. Fortunately, it can be turned also into a systematic synthesis tool by carefully abstracting the MOSFET design space without jeopardizing the accuracy. In this talk, I will present a design methodology based on this approach. It enables a designer to do biasing and sizing from a generic set of one 3-dimensional and three 2-dimensional databases extracted with simulation only once for each unique threshold option of the device library. An individual iterative simulation is also needed for determining the channel length of any device whose output conductance is among the specified performance metrics. The methodology is not only as accurate as the compact model supplied by the manufacturer but also perfectly universal because its application doesn't involve any model-specific parameter. Those who share my taste of engineering may also appreciate the fact that the math needed for its practice is limited to one or the other of the four elementary arithmetic operations on two real numbers.
Biography: Uğur Çilingiroğlu received the M.S. degree in electrical engineering from Istanbul Technical University in 1973, and the Ph.D. degree in microelectronics from Southampton University, Southampton, U.K., in 1978. He held faculty positions at Istanbul Technical University between 1978 and 2001, and at Texas A&M University, College Station, TX, USA, during 1985-1986, 1988-1991, and 1999-2005. Since 2005, he has been with Yeditepe University. His research interest in microelectronics includes technology, devices and circuits but excludes system aspects.
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