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Energy-Efficient Smart Temperature Sensors in CMOS Technology von Souri, Kamran (eBook)

  • Erscheinungsdatum: 03.11.2017
  • Verlag: Springer-Verlag
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Energy-Efficient Smart Temperature Sensors in CMOS Technology

This book describes the design and implementation of energy-efficient smart (digital output) temperature sensors in CMOS technology. To accomplish this, a new readout topology, namely the zoom-ADC, is presented. It combines a coarse SAR-ADC with a fine Sigma-Delta (SD) ADC. The digital result obtained from the coarse ADC is used to set the reference levels of the SD-ADC, thereby zooming its full-scale range into a small region around the input signal. This technique considerably reduces the SD-ADC's full-scale range, and notably relaxes the number of clock cycles needed for a given resolution, as well as the DC-gain and swing of the loop-filter. Both conversion time and power-efficiency can be improved, which results in a substantial improvement in energy-efficiency. Two BJT-based sensor prototypes based on 1st-order and 2nd-order zoom-ADCs are presented. They both achieve inaccuracies of less than ±0.2°C over the military temperature range (-55°C to 125°C). A prototype capable of sensing temperatures up to 200°C is also presented. As an alternative to BJTs, sensors based on dynamic threshold MOSTs (DTMOSTs) are also presented. It is shown that DTMOSTs are capable of achieving low inaccuracy (±0.4°C over the military temperature range) as well as sub-1V operation, making them well suited for use in modern CMOS processes. Dr. Kamran Souri received his M.Sc. (cum laude) from the Electronic Instrumentation Laboratory, Delft University of Technology, in 2009. Between 2009 and 2014 he was a Ph.D. candidate in the same faculty, focusing on the design of ultralow-power/energy-efficient CMOS smart temperature sensors for RFID applications. He is currently a Principal Circuit Designer with SiTime Corporation, Santa Clara, CA, USA, where he is working on circuit design for MEMS-based (temperature-compensated) oscillators. His current research interests include the design of low-power, energy-efficient sensor interfaces, data converters, precision mixed-signal and reference circuits. Dr. Souri managed to improve the energy-efficiency of integrated temperature sensors by nearly two orders of magnitude, thus enabling the realization of practical temperature-sensing RFID (Radio Frequency Identification) tags. His work has resulted in one US Patent, many international publications and a number of commercial products. In Feb. 2013, he received the IEEE Solid-State Circuit Society Predoctoral Achievement Award. Dr. Souri has also served as a technical reviewer for the Journal of Solid-State Circuits (JSSC), the Journal of Analog Integrated Circuits and Signal Processing (AICSP), the IEEE Transactions on Circuits and Systems I (TCAS-I), the IEEE International Symposium on Circuits and Systems (ISCAS) and the Journal of Semiconductor Technology and Science (JSTS). Prof. Dr. Kofi A. A. Makinwa received the B.Sc. (1 st class honours) and M.Sc. degrees from Obafemi Awolowo University, Nigeria in 1985 and 1988 respectively. In 1989, he received the M.E.E. degree (cum laude) from the Philips International Institute, The Netherlands and in 2004, the Ph.D. degree from Delft University of Technology, The Netherlands. From 1989 to 1999, he was a Research Scientist with Philips Research Laboratories, Eindhoven, The Netherlands, where he worked on interactive displays and digital recording systems. In 1999, he joined Delft University of Technology, where he is currently an Antoni van Leeuwenhoek Professor and Head of the Microelectronics Department. His main research interests are in the design of precision mixed-signal circuits, sigma-delta modulators, smart sensors and sensor interfaces. This has resulted in 12 books, 25 patents and over 200 publications. Kofi Makinwa is the Analog Subcommittee Chair of the International Solid-State Circuits Conference (ISSCC). He also serves on the program committees of the VLSI Symposium, the European Solid-State Circuits Conference (ESSCIRC) and the Advances in Analog Circuit Design (AACD) worksh


    Format: PDF
    Kopierschutz: AdobeDRM
    Seitenzahl: 118
    Erscheinungsdatum: 03.11.2017
    Sprache: Englisch
    ISBN: 9783319623078
    Verlag: Springer-Verlag
    Größe: 4178 kBytes
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