NDLI: Designing analog and RF circuits in nanoscale CMOS technologies: Scale the supply, reduce the area and use digital gates

Content Provider	IEEE Xplore Digital Library
Author	Kinget, P.
Copyright Year	2009
Description	Author affiliation: Dept. of Electrical Engineering Columbia University, New York, NY 10027, USA (Kinget, P.)
Abstract	We will present our recent research that has centered around three themes aimed at facilitating the design of analog and RF interface circuits in digital nanoscale CMOS processes. Nanometer CMOS is operating with supply voltages of about IV or less and for low power operation in future deeply scaled nodes supply voltages as low as 0.5V are projected. Supply reductions are needed to maintain reliability for scaled devices, but are further strongly driven by the requirement to improve energy efficiency, so that functional density can increase without raising power density. In our research we have investigated the scaling of the supply voltage of analog and RF interfaces down to 0.5V. Keeping these interfaces compatible with the core digital technology and supply is eventually always preferred for high volume applications and can offer advantages in low power system-on-chip applications with large digital signal processing cores. We will show that this research track offers ample opportunities for innovations in device biasing, circuit topologies, system architectures and signaling. Our ultra-low voltage prototypes include reference circuits, filters, analog-to-digital converters and fully integrated RF front-ends including baseband filtering and frequency synthesis. A second important theme is circuit design techniques to reduce area used by RF integrated circuits. Recent RFIC designs rely substantially on the use of on-chip spiral inductors, but these structures do not scale sufficiently with technology and become progressively more expensive. We will show design and layout techniques that allow to reuse the space under spiral inductors without affecting the performance of the building blocks. Examples include voltage-controlled oscillators and fully integrated phase-locked loops. Finally we will discuss the use of digital gates to improve the performance of analog and RF integrated circuits. Digital signal processing blocks are reducing much faster in area and power than analog or RF circuits and whenever possible the assistance of digital computation should be exploited to reduce the need for analog/RF circuits or enhance their performance. In particular we will discuss the opportunities for using digital intelligence to improve the linearity performance of RF front-ends while making them more robust to process variations and simplifying their design. We will point out the need for a different approach for digital assistance for RF functions compared to mixed signal functions.
Starting Page	1
Ending Page	1
File Size	37053
Page Count	1
File Format	PDF
ISBN	9781424439850
DOI	10.1109/COMCAS.2009.5386007
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-11-09
Publisher Place	Israel
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radio frequency Spirals CMOS analog integrated circuits Space technology Voltage Digital signal processing CMOS technology Radiofrequency integrated circuits CMOS digital integrated circuits Inductors
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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