A short course on gm/ID design methodologies - Part I
Design methods for analog integrated circuits based on gm/ID have the key feature of being based on a magnitude (the gm/ID ratio) that provides information about the transistor operation independently of its width (W, letting aside very narrow transistors rarely applied in analog design) and length (L), except for a slight dependence on L in short channel devices. A general characteristic for the transistors of a given length in each process is obtained. Therefore, it gives a global view and orientation about the design space. This makes it very suitable for helping the designer to gain insight on how to tune the design and, particularly, aiding novel designers to quickly find their way in the analog design art. The same applies to the, somehow “dual”, inversion coefficient (IC) based methods. Both methods are based on magnitudes (gm/ID and IC) that are ratios (or proportional to ratios) of key magnitudes of the transistor operation.
Extensions and evolutions of the gm/ID method have, implicitly or explicitly, identified this “ratio-based characteristic” and have shown the advantages of considering other key ratios of magnitudes that share the same characteristics as gm/ID of be W independent. The approach presented is particularly appropriate for nanoscale devices where multiple unitary devices in parallel are usually applied.
This short course will provide an overview of these ratio-based analog design approaches, contributing to showing a general vision about them. These methods originally targeted small signal analog design. Examples of extension of the basic idea to nonlinear RF blocks (power amplifiers and envelope detectors) as well as to distortion analysis will be shown.
Date and Time
Location
Hosts
Registration
- Date: 14 May 2025
- Time: 06:30 AM UTC to 08:30 AM UTC
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- 46 Avenue Félix Viallet
- Grenoble, Rhooe-Alpes
- France 38000
- Building: T
- Room Number: T312
- Click here for Map
- Starts 02 May 2025 08:00 AM UTC
- Ends 13 May 2025 10:00 PM UTC
- No Admission Charge
Speakers
Prof. Fernando Silveira of Universidad de la República, Montevideo, Uruguay
Ratio-Based Analog/RF Design : A generalization of gm/ID and inversion coefficient methods
Biography:
Fernando Silveira received the electrical engineering degree from Universidad de la República, Montevideo, Uruguay, in 1990, and the M.Sc. and Ph.D. degrees in microelectronics from Université catholique de Louvain, Louvain-la-Neuve, Belgium, in 1995 and 2002, respectively. He is currently a Professor with the Electrical Engineering Department, Universidad de la República. His research interests include the design of ultra-low-power analog and RF integrated circuits and systems, in particular with biomedical application. In this field, he has co-authored two books and many technical papers. He has had multiple industrial activities including leading the design of an application specified integrated circuit for implantable pacemakers and designing analog circuit modules for implantable devices for various companies worldwide. He was member of the Technical Advisory Board of Gtronix, Inc, USA from 2006 to 2010, received the “Ingeniero Destacado” (Distinguished Engineer) award by the Uruguayan Association of Engineers in 2007, was a member for 2011-2012 of the Distinguished Lecturers Program of the IEEE Circuits and Systems Society, Associate Editor of IEEE TCAS II in 2020-2021 and of IEEE TCAS I in 2024-2025. Since 2017 he is a member of the Honorary Committee of the National Researchers System of Uruguay.