Author: Chutham Sawigun
Publisher: CRC Press
ISBN: 1000794601
Category : Technology & Engineering
Languages : en
Pages : 199
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Book Description
As the requirements for low power consumption and very small physical dimensions in portable, wearable and implantable medical devices are calling for integrated circuit design techniques using MOSFETs operating in the subthreshold regime, this book first revisits some well-known circuit techniques that use CMOS devices biased in subthreshold in order to establish nanopower integrated circuit designs. Based on the these findings, this book shows the development of a class-AB current-mode sample-and-hold circuit with an order of magnitude improvement in its figure of merit compared to other state-of-the-art designs. Also, the concepts and design procedures of 1) single-branch filters 2) follower-integrator-based lowpass filters and 3) modular transconductance reduction techniques for very low frequency filters are presented. Finally, to serve the requirement of a very large signal swing in an energy-based action potential detector, a nanopower class-AB current-mode analog multiplier is designed to handle input current amplitudes of more than 10 times the bias current of the multiplier circuit. The invented filter circuits have been fabricated in a standard 0.18 μ CMOS process in order to verify our circuit concepts and design procedures. Their experimental results are reported.
Author: Chutham Sawigun
Publisher: River Publishers
ISBN: 8793379293
Category : Technology & Engineering
Languages : en
Pages : 200
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Book Description
As the requirements for low power consumption and very small physical dimensions in portable, wearable and implantable medical devices are calling for integrated circuit design techniques using MOSFETs operating in the subthreshold regime, this book first revisits some well-known circuit techniques that use CMOS devices biased in subthreshold in order to establish nanopower integrated circuit designs. Based on the these findings, this book shows the development of a class-AB current-mode sample-and-hold circuit with an order of magnitude improvement in its figure of merit compared to other state-of-the-art designs. Also, the concepts and design procedures of 1) single-branch filters 2) follower-integrator-based lowpass filters and 3) modular transconductance reduction techniques for very low frequency filters are presented. Finally, to serve the requirement of a very large signal swing in an energy-based action potential detector, a nanopower class-AB current-mode analog multiplier is designed to handle input current amplitudes of more than 10 times the bias current of the multiplier circuit. The invented filter circuits have been fabricated in a standard 0.18 µ CMOS process in order to verify our circuit concepts and design procedures. Their experimental results are reported.
Author: Armin Tajalli
Publisher: Springer Science & Business Media
ISBN: 1441964789
Category : Technology & Engineering
Languages : en
Pages : 300
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Book Description
Design exibility and power consumption in addition to the cost, have always been the most important issues in design of integrated circuits (ICs), and are the main concerns of this research, as well. Energy Consumptions: Power dissipation (P ) and energy consumption are - diss pecially importantwhen there is a limited amountof power budgetor limited source of energy. Very common examples are portable systems where the battery life time depends on system power consumption. Many different techniques have been - veloped to reduce or manage the circuit power consumption in this type of systems. Ultra-low power (ULP) applications are another examples where power dissipation is the primary design issue. In such applications, the power budget is so restricted that very special circuit and system level design techniquesare needed to satisfy the requirements. Circuits employed in applications such as wireless sensor networks (WSN), wearable battery powered systems [1], and implantable circuits for biol- ical applications need to consume very low amount of power such that the entire system can survive for a very long time without the need for changingor recharging battery[2–4]. Using newpowersupplytechniquessuchas energyharvesting[5]and printable batteries [6], is another reason for reducing power dissipation. Devel- ing special design techniques for implementing low power circuits [7–9], as well as dynamic power management (DPM) schemes [10] are the two main approaches to control the system power consumption. Design Flexibility: Design exibility is the other important issue in modern in- grated systems.
Author: Cosmin Radu Popa
Publisher: Springer Science & Business Media
ISBN: 1461404037
Category : Technology & Engineering
Languages : en
Pages : 463
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Book Description
Synthesis of Computational Structures for Analog Signal Processing focuses on analysis and design of analog signal processing circuits. The author presents a multitude of design techniques for improving the performances of analog signal processing circuits, and proposes specific implementation strategies that can be used in CMOS technology. The author's discussion proceeds from the perspective of signal processing as it relates to analog. Included are coverage of low-power design, portable equipment, wireless nano-sensors and medical implantable devices. The material is especially appropriate for researchers and specialists in the area of analog and mixed-signal CMOS VLSI design, as well as postgraduate or Ph.D. students working on analog microelectronics.
Author: Varun Bajaj
Publisher: CRC Press
ISBN: 1000413306
Category : Technology & Engineering
Languages : en
Pages : 337
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Book Description
This book examines the use of biomedical signal processing—EEG, EMG, and ECG—in analyzing and diagnosing various medical conditions, particularly diseases related to the heart and brain. In combination with machine learning tools and other optimization methods, the analysis of biomedical signals greatly benefits the healthcare sector by improving patient outcomes through early, reliable detection. The discussion of these modalities promotes better understanding, analysis, and application of biomedical signal processing for specific diseases. The major highlights of Biomedical Signal Processing for Healthcare Applications include biomedical signals, acquisition of signals, pre-processing and analysis, post-processing and classification of the signals, and application of analysis and classification for the diagnosis of brain- and heart-related diseases. Emphasis is given to brain and heart signals because incomplete interpretations are made by physicians of these aspects in several situations, and these partial interpretations lead to major complications. FEATURES Examines modeling and acquisition of biomedical signals of different disorders Discusses CAD-based analysis of diagnosis useful for healthcare Includes all important modalities of biomedical signals, such as EEG, EMG, MEG, ECG, and PCG Includes case studies and research directions, including novel approaches used in advanced healthcare systems This book can be used by a wide range of users, including students, research scholars, faculty, and practitioners in the field of biomedical engineering and medical image analysis and diagnosis.
Author: Massimo Alioto
Publisher: Springer
ISBN: 3319514822
Category : Technology & Engineering
Languages : en
Pages : 527
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Book Description
This book offers the first comprehensive view on integrated circuit and system design for the Internet of Things (IoT), and in particular for the tiny nodes at its edge. The authors provide a fresh perspective on how the IoT will evolve based on recent and foreseeable trends in the semiconductor industry, highlighting the key challenges, as well as the opportunities for circuit and system innovation to address them. This book describes what the IoT really means from the design point of view, and how the constraints imposed by applications translate into integrated circuit requirements and design guidelines. Chapter contributions equally come from industry and academia. After providing a system perspective on IoT nodes, this book focuses on state-of-the-art design techniques for IoT applications, encompassing the fundamental sub-systems encountered in Systems on Chip for IoT: ultra-low power digital architectures and circuits low- and zero-leakage memories (including emerging technologies) circuits for hardware security and authentication System on Chip design methodologies on-chip power management and energy harvesting ultra-low power analog interfaces and analog-digital conversion short-range radios miniaturized battery technologies packaging and assembly of IoT integrated systems (on silicon and non-silicon substrates). As a common thread, all chapters conclude with a prospective view on the foreseeable evolution of the related technologies for IoT. The concepts developed throughout the book are exemplified by two IoT node system demonstrations from industry. The unique balance between breadth and depth of this book: enables expert readers quickly to develop an understanding of the specific challenges and state-of-the-art solutions for IoT, as well as their evolution in the foreseeable future provides non-experts with a comprehensive introduction to integrated circuit design for IoT, and serves as an excellent starting point for further learning, thanks to the broad coverage of topics and selected references makes it very well suited for practicing engineers and scientists working in the hardware and chip design for IoT, and as textbook for senior undergraduate, graduate and postgraduate students ( familiar with analog and digital circuits).
Author: Gabriel Alfonso Rincón-Mora
Publisher:
ISBN: 9781705848807
Category : Linear integrated circuits
Languages : en
Pages : 132
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Book Description
This slide book presents, explains, and shows how to understand, develop, and use semiconductor devices to model, analyze, and design transistor-level analog integrated circuits (ICs) with and without feedback using bipolar and CMOS technologies. The underlying aim is to cultivate and develop insight and intuition for how semiconductor devices work individually and collectively in microelectronic circuits. For this, the presentation seeks to furnish an intuitive view of ICs that transcends mathematical and algebraic formulations to empower engineers with the tools necessary to design ICs that perform practical and complex analog functions.
Author: Shih-Chii Liu
Publisher: MIT Press
ISBN: 9780262122559
Category : Computers
Languages : en
Pages : 466
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Book Description
An introduction to the design of analog VLSI circuits. Neuromorphic engineers work to improve the performance of artificial systems through the development of chips and systems that process information collectively using primarily analog circuits. This book presents the central concepts required for the creative and successful design of analog VLSI circuits. The discussion is weighted toward novel circuits that emulate natural signal processing. Unlike most circuits in commercial or industrial applications, these circuits operate mainly in the subthreshold or weak inversion region. Moreover, their functionality is not limited to linear operations, but also encompasses many interesting nonlinear operations similar to those occurring in natural systems. Topics include device physics, linear and nonlinear circuit forms, translinear circuits, photodetectors, floating-gate devices, noise analysis, and process technology.
Author: Gabriel A. Rincon-Mora
Publisher: McGraw Hill Professional
ISBN: 0071826661
Category : Technology & Engineering
Languages : en
Pages : 529
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Book Description
THE LATEST ANALOG IC DESIGN TECHNIQUES Fully revised and expanded to meet the emerging demands of mixedsignal systems, Analog IC Design with Low-Dropout Regulators, Second Edition, teaches analog IC concepts and explains how to use them to design, analyze, and build linear low-dropout (LDO) regulator ICs with bipolar, CMOS, and biCMOS semiconductor process technologies. The book draws physical insight from topics presented and illustrates how to develop and evaluate analog ICs for today's expanding wireless and mobile markets. Practical examples and end-of-chapter review questions reinforce important concepts and techniques developed in this cutting-edge guide. LEARN HOW TO: Evaluate power-supply systems Predict and specify how linear regulators perform and respond to variations in their supplies, loads, and other working conditions Work with semiconductor devices--resistors, capacitors, diodes, and transistors Combine microelectronic components to design current mirrors, differential pairs, differential amplifiers, linear low-dropout regulators, and their variants Close and stabilize feedback control loops that regulate voltages and currents Design circuits that establish reliable bias currents and reference circuits Determine the small-signal dynamics of analog ICs and analog systems Establish independent, stable, noise-free, and predictable power-supply voltages Implement overcurrent, thermal, reverse-battery, and ESD protection Test, measure, and evaluate linear regulator ICs
Author: Gabriel Rincon-Mora
Publisher: McGraw Hill Professional
ISBN: 007160894X
Category : Technology & Engineering
Languages : en
Pages : 400
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Book Description
Master Analog Integrated-Circuit Design Design, analyze, and build linear low-dropout (LDO) regulator ICs in bipolar, CMOS, and biCMOS semiconductor process technologies. This authoritative guide offers a unique emphasis on embedded LDO design. Through intuitive explanations and detailed illustrations, the book shows how you can put these theories to work creating analog ICs for the latest portable, battery-powered devices. Analog IC Design with Low-Dropout Regulators details the entire product development cycle-from defining objectives and selecting components to blueprinting, assembling, and fine-tuning performance. Work with semiconductors, employ negative feedback, handle fluctuating loads, and embed regulators in ICs. You will also learn how to build prototypes, perform tests, and integrate system-on-chip (SoC) functionality. Discover how to: Design, test, and assemble BJT-, MOSFET-, and JFET-based linear regulators Use current mirrors, buffers, amplifiers, and differential pairs Integrate feedback loops, negative feedback, and control limits Maintain an independent, stable, noise-free, and predictable output voltage Compensate for low input current and wide voltage swings Optimize accuracy, efficiency, battery life, and integrity Implement overcurrent protection and thermal-shutdown features Establish power and operating limits using characterization techniques
