This book demonstrates why highly-digital CMOS time-encoding analog-to-digital converters incorporating voltage-controlled oscillators (VCOs) and time-to-digital converters (TDCs) are a good alternative to traditional switched-capacitor S-D modulators for power-efficient sensor, biomedical and communications applications. The authors describe the theoretical foundations and design methodology of such time-based ADCs from the basics to the latest developments. While most analog designers might notice some resemblance to PLL design, the book clearly highlights the differences to standard PLL circuit design and illustrates the design methodology with practical circuit design examples.

• Describes in detail the design methodology for CMOS time-encoding analog-to-digital converters that can be integrated along with digital logic in a nanometer System on Chip;
• Assists analog designers with the necessary change in design paradigm, highlighting differences between designing time-based ADCs and traditional analog circuits like switched-capacitor converters and PLLs;
• Uses a highly-visual, tutorial approach to the topic, including many practical examples of techniques introduced.

Autorentext
Georges G.E. Gielen received the MSc and PhD degrees in Electrical Engineering from the Katholieke Universiteit Leuven (KU Leuven), Belgium, in 1986 and 1990, respectively. He is currently Full Professor in the MICAS research division at the Department of Electrical Engineering (ESAT) at KU Leuven. He was visiting professor in UC Berkeley and Stanford University. Since 2020 he is Chair of the Department of Electrical Engineering. His research interests are in the design of analog and mixed-signal integrated circuits, and especially in analog and mixed-signal CAD tools and design automation. He is a frequently invited speaker/lecturer and coordinator/partner of several (industrial) research projects in this area, including several European projects. He has (co-)authored 10 books and more than 600 papers in edited books, international journals and conference proceedings. He is a 1997 Laureate of the Belgian Royal Academy of Sciences, Literature and Arts in the discipline of Engineering. He is Fellow of the IEEE since 2002, and received the IEEE CAS Mac Van Valkenburg award in 2015 and the IEEE CAS Charles Desoer award in 2020. He is an elected member of the Academia Europaea.

Luis Hernandez-Corporales received the MS and Ph.D. degrees in Telecommunication Engineering from the Polytechnic University of Madrid, Spain, in 1989 en 1995, respectively. He did a postdoctoral stay in the U.S. during 1996 at the ECE dept. of Oregon State University. In 1997 he joined the University Carlos III of Madrid, where he is currently Full Professor in the Department of Electronic Technology and leads the mixed signal Microelectronic Design and Applications research group. His topics of interest focus on signal theory, mixed signal microelectronics and specifically data acquisition using sigma-delta modulation. He has published more than 150 scientific articles and holds 20 international patents. He is a member of the IEEE-CAS ASPTC committee and has been associate editor of IEEE Transactions on Circuits and Systems I and II for 8 years.

Pieter Rombouts received the Engineering degree in Applied Physics and the Ph.D. degree in Electronics from Ghent University, Belgium, in 1994 and 2000, respectively. Since 1994, he has been with the Electronics and Information Systems Department at Ghent University, where he has been a Professor of analog electronics since 2005. His technical interests are signal processing, circuits and systems theory, analog circuit design, and sensor systems. The main focus of his research has been on A/D and D/A conversion. He has served or is currently serving as an Associate Editor for the IEEE Transactions on Circuits and Systems I, the IEEE Transactions on Circuits and Systems II and Electronics Letters.

Inhalt

Time-based and VCO-ADCs from a signal processing perspective.- Quantization noise, thermal noise, flicker noise, phase noise (PSS) and clock jitter in VCO-ADCs.- Overview of VCO-ADC architectures.- Oscillators: ring oscillators and their design methodology; other oscillators.- Design techniques-practical example.- Closed-loop VCO-ADC architectures.- Practical design cases.