Ángel Rodríguez-Vázquez – författare

Written by a group of leading researchers in the field, this is a pioneering work, providing a concise analysis of the topic by the inventors of the CNN universal machine and the supercomputer chip. Opening with a foreword by the respected academic, Professor Leon Chua, the book progresses to explore circuit design, prototyping and analogical algorithms. Subjects covered include the VLSI design and implementation of CNNs, the testing of CNN chips and a detailed analysis of the new system for prototyping and interfacing the CNN universal chips? Includes applications in: Neurocomputing, Machine Vision, Image Processing and VLSI Signal Processing? Provides simple algorithms to design and synthesise complex circuits? Written and edited by world authorities in this field, including Leon Chua who invented CNNs in the late 1980s.This text follows on from Roska's previous success - Cellular Neural Networks and D3 - with this groundbreaking work about a rapidly developing and increasingly influential field of circuit theory. This text would be of great interest to a broad audience including postgraduate and advanced students, researchers and professionals in electrical and electronic engineering, computer science, mathematics and neurobiology.

This text discusses architectures, circuits and procedures for the optimum design of bandpass sigma-delta (SD) A/D interfaces for mixed-signal chips in standard CMOS technologies. The book is detailed and in-depth coverage of switched-current (SI) errors, which supports the design of high performance SI chips. The book starts with a tutorial presentation of the fundamentals of bandpass SD converters, their applications in communications and their most common architectures. It then presents the basic SI building blocks required for their implementation and analyzes in great detail the operation of these blocks. The influence of SI errors on the performance of the SD modulators (SDMs) is also studied. The outcome is a unique set of models which can be employed with a double purpose: namely, to support iterative procedures employed in mapping specifications onto design parameters; and to allow for accurate behavioural time-domain simulation using MATLAB-like tools. The book is completed with two case studies corresponding to modulators for AM digital radio receivers.The analyses, models and procedures in the book support the design of SI front-ends with performance indexes comparable to those of switched-capacitor circuits, which makes a significant difference as compared to previous works in the area of SI circuits. Together with a detailed revision of the SI literature, the book presents practical recipes on how to get the maximum performance from SI circuits, and illustrates them by means of two case study chips in CMOS submicron technologies. These prototypes constitute the first reported IC realizations of SI bandpass SDMs. This text contains valuable information to be used as a reference by designers of the analogue front-end of mixed-signal chips. The models presented in the book will help these designers to increase their productivity. The tutorial, comprehensive coverage of all issues associated with bandpass sigma-delta converters makes the book very well suited for graduate courses.

Cellular Neural Networks and Analog VLSI brings together in one place important contributions and up-to-date research results in this fast moving area. Cellular Neural Networks and Analog VLSI serves as an excellent reference, providing insight into some of the most challenging research issues in the field.

Field-Programmable Analog Arrays brings together in one place important contributions and up-to-date research results in this fast moving area. Field-Programmable Analog Arrays serves as an excellent reference, providing insight into some of the most challenging research issues in the field.

This text discusses architectural and circuit considerations for optimizing the design of oversampled A/D interfaces for mixed-signal CMOS ASICs. The mathematical background is presented and it is suitable for novices in the field. Practical recipes on how to get the maximum performance from these kinds of circuits are presented and illustrated through three converter prototypes in CMOS submicron technologies. A feature of this book is the presentation of a systematic methodology for increasing the productivity of engineers in the design of high-performance modulators. It uses optimization at the architecture and the circuit levels, together with hierarchical transmission of the specifications among levels. The tasks of architecture selection, architecture sizing and building block sizing are supported by CAD tools, thus allowing designers to obtain demanding modulator specifications in short design cycles. The book is organized such that it can be used for a graduate course on S modulator design. In addition, the book is a reference for designers who want to improve their productivity in the design of oversampled mixed-signal interfaces.

The book presents a top-down circuit description for the implementation of asynchronous vision sensors based on Single-Photon Avalanche Diodes (SPADs). It provides design considerations to convey the SPADs pulses through a channel shared by all the pixels. The book also presents architectures where dynamic vision sensors and SPADs converge.Design of Event-Driven SPAD-Based 3D Image Sensors provides detailed technical insights about novel image sensor architectures with SPADs with asynchronous operation. At the sensor level, the book provides asynchronous circuitry to read and arbiter the pixel outputs. The authors explore new LiDAR architectures with asynchronous operation and provide insights into their design. A detailed benchmark of modern and competitive LiDAR systems is also presented. At the pixel level, the book provides design considerations to convey the SPADs pulses through a channel shared by all the pixels. At the sensor level, the book provides asynchronous circuitry to read and arbiter the pixel outputs. Finally, experimental results of very novel LiDAR systems with asynchronous operation will be provided and analyzed.The book is written for professionals who want to explore new tendencies on the design of image sensors for the implementation of LiDAR systems.

The book presents a top-down circuit description for the implementation of asynchronous vision sensors based on Single-Photon Avalanche Diodes (SPADs). It provides design considerations to convey the SPADs pulses through a channel shared by all the pixels. The book also presents architectures where dynamic vision sensors and SPADs converge.Design of Event-Driven SPAD-Based 3D Image Sensors provides detailed technical insights about novel image sensor architectures with SPADs with asynchronous operation. At the sensor level, the book provides asynchronous circuitry to read and arbiter the pixel outputs. The authors explore new LiDAR architectures with asynchronous operation and provide insights into their design. A detailed benchmark of modern and competitive LiDAR systems is also presented. At the pixel level, the book provides design considerations to convey the SPADs pulses through a channel shared by all the pixels. At the sensor level, the book provides asynchronous circuitry to read and arbiter the pixel outputs. Finally, experimental results of very novel LiDAR systems with asynchronous operation will be provided and analyzed.The book is written for professionals who want to explore new tendencies on the design of image sensors for the implementation of LiDAR systems.

CMOS Cascade Sigma-Delta Modulators for Sensors and Telecom: Error Analysis and Practical Design starts with a tutorial presentation of the fundamentals of low-pass sigma-delta modulators, their applications, and their most common architectures. It then presents an exhaustive analysis of SC circuit errors with a twofold outcome. On the one hand, compact expressions are derived to support design plans and quick top-down design. On the other, detailed behavioral models are presented to support accurate verification. This set of models allows the designer to determine the required specifications for the different modulator building blocks and form the basis of a systematic design approach. The book is completed in subsequent chapters with the detailed presentation of three high-performance modulator ICs: the first two are intended for DSL-like applications, whereas the third one is intended for automotive sensors.CMOS Cascade Sigma-Delta Modulators forSensors and Telecom: Error Analysis and Practical Design contains highly valuable information that is structured to give the reader the necessary insight on how to design SC sigma-delta modulators.

Aiming at the core of the problem, Reuse Based Methodologies and Tools in the Design of Analog and Mixed-Signal Integrated Circuits presents a framework for the reuse-based design of AMS circuits. The framework is founded on three key elements: (1) a CAD-supported hierarchical design flow that facilitates the incorporation of AMS reusable blocks, reduces the overall design time, and expedites the management of increasing AMS design complexity; (2) a complete, clear definition of the AMS reusable block, structured into three separate facets or views: the behavioral, structural, and layout facets, the first two for top-down electrical synthesis and bottom-up verification, the latter used during bottom-up physical synthesis; (3) the design for reusability set of tools, methods, and guidelines that, relying on intensive parameterization as well as on design knowledge capture and encapsulation, allows to produce fully reusable AMS blocks. Reuse Based Methodologies and Tools in the Design of Analog and Mixed-Signal Integrated Circuits features a very detailed, tutorial, and in-depth coverage of all issues and must-have properties of reusable AMS blocks, as well as a thorough description of the methods and tools necessary to implement them. For the first time, this has been done hierarchically, covering one by one the different stages of the design flow, allowing us to examine how the reusable block yields its benefits, both in design time and correct performance.

As the trend to system-on-chip solutions gradually consolidates, including an ever-increasing usage of digital signal processing, a concurrent enhancement of the analogue front-end performance is required. Moreover, such enhanced performances must be achieved under the constraints imposed by digitally driven technology roadmaps, with low-voltage supplies, poor-performance (and often badly characterized) devices - and above all the unavoidable presence of noisy digital circuits. It is under the pressure of these challenges that analogue designers must sharpen their wits to overcome the problems. Supported by both designers' ingenuity and slow, but precious, improvements of digital CMOS technologies, the results of recent research confirm that solutions can be found. In consonance with this trend, this text compiles up-to-date achievements regarding the design of high-speed and high-resolution data converters in deep submicron CMOS technologies. The four types of analogue-to-digital converter architectures commonly found in this arena are covered, namely sigma-delta, pipeline, folding/interpolating and flash.For all these types, latest achievements regarding the solution of critical architectural and circuital issues are presented, and illustrated through IC prototypes with measured state-of-the-art performances. Some of these prototypes are conceived to be employed at the chipset of newest generation wireline modems (ADSL and ADSL+). Others are intended for wireless transceivers. Besides analog-to-digital converters, the book also covers other functions needed for communication systems, such as digital-to-analog converters, analog filters, programmable gain amplifiers, digital filters, and line drivers. In addition to case studies on state-of-the-art converters, the book includes overview chapters aimed at presenting the existing knowledge in a structured, comprehensive style. Nyquist converters and sigma-delta converters are covered in such a way.

Systematic Design of CMOS Switched-Current Bandpass Sigma-Delta Modulators for Digital Communication Chips discusses architectures, circuits and procedures for the optimum design of bandpass sigma-delta (SD) A/D interfaces for mixed-signal chips in standard CMOS technologies. The book differs from others in the very detailed and in-depth coverage of switched-current (SI) errors, which supports the design of high performance SI chips. The book starts with a tutorial presentation of the fundamentals of bandpass SD converters, their applications in communications and their most common architectures. It then presents the basic SI building blocks required for their implementation and analyzes in great detail the operation of these blocks. The influence of SI errors on the performance of the SD modulators (SDMs) is also studied. The outcome is a unique set of models which can be employed with a double purpose: namely, to support iterative procedures employed in mapping specifications onto design parameters; and to allow for accurate behavioural time-domain simulation using MATLAB-like tools. The book is completed with two case studies corresponding to modulators for AM digital radio receivers.

Cellular Neural Networks and Analog VLSI brings together in one place important contributions and up-to-date research results in this fast moving area. Cellular Neural Networks and Analog VLSI serves as an excellent reference, providing insight into some of the most challenging research issues in the field.

Field-Programmable Analog Arrays brings together in one place important contributions and up-to-date research results in this fast moving area. Field-Programmable Analog Arrays serves as an excellent reference, providing insight into some of the most challenging research issues in the field.

Top-Down Design of High-Performance Sigma-Delta Modulators discusses architectural and circuit considerations for optimizing the design of oversampled A/D interfaces for mixed-signal CMOS ASICs. The necessary mathematical background is presented in a detailed and comprehensive style, suitable for novices in the field. Practical recipes on how to get the maximum performance from these kinds of circuits are presented and illustrated through three converter prototypes in CMOS submicron technologies. A distinctive feature of this book is the presentation of a systematic methodology for increasing the productivity of engineers in the design of high-performance modulators. It uses optimization at the architecture and the circuit levels, together with hierarchical transmission of the specifications among levels. The major tasks of architecture selection, architecture sizing and building block sizing are supported by dedicated CAD tools, thus allowing designers to obtain demanding modulator specifications in short design cycles.Top-Down Design of High-Performance Sigma-Delta Modulators is organized such that it can be used for a graduate course on SigmaDelta modulator design. In addition, the book is a valuable reference for designers who want to improve their productivity in the design of oversampled mixed-signal interfaces.

CMOS Telecom Data Converters compiles the latest achievements regarding the design of high-speed and high-resolution data converters in deep submicron CMOS technologies. The four types of analog-to-digital converter architectures commonly found in this arena are covered, namely sigma-delta, pipeline, folding/interpolating and flash. For all these types, latest achievements regarding the solution of critical architectural and circuital issues are presented, and illustrated through IC prototypes with measured state-of-the-art performances. Some of these prototypes are conceived to be employed at the chipset of newest generation wireline modems (ADSL and ADSL+). Others are intended for wireless transceivers. Besides analog-to-digital converters, the book also covers other functions needed for communication systems, such as digital-to-analog converters, analog filters, programmable gain amplifiers, digital filters, and line drivers.

This book presents models and procedures to design pipeline analog-to-digital converters, compensating for device inaccuracies, so that high-performance specs can be met within short design cycles. These models are capable of capturing and predicting the behavior of pipeline data converters within less than half-a-bit deviation, versus transistor-level simulations. As a result, far fewer model iterations are required across the design cycle. Models described in this book accurately predict transient behaviors, which are key to the performance of discrete-time systems and hence to the performance of pipeline data converters.

This book presents a comprehensive, systematic approach to the development of vision system architectures that employ sensory-processing concurrency and parallel processing to meet the autonomy challenges posed by a variety of safety and surveillance applications.  Coverage includes a thorough analysis of resistive diffusion networks embedded within an image sensor array. This analysis supports a systematic approach to the design of spatial image filters and their implementation as vision chips in CMOS technology. The book also addresses system-level considerations pertaining to the embedding of these vision chips into vision-enabled wireless sensor networks.Describes a system-level approach for designing of vision devices and  embedding them into vision-enabled, wireless sensor networks; Surveys state-of-the-art, vision-enabled WSN nodes; Includes details of specifications and challenges of vision-enabled WSNs; Explains architectures for low-energy CMOS vision chips with embedded, programmable spatial filtering capabilities; Includes considerations pertaining to the integration of vision chips into off-the-shelf WSN platforms.

This book presents models and procedures to design pipeline analog-to-digital converters, compensating for device inaccuracies, so that high-performance specs can be met within short design cycles. These models are capable of capturing and predicting the behavior of pipeline data converters within less than half-a-bit deviation, versus transistor-level simulations. As a result, far fewer model iterations are required across the design cycle. Models described in this book accurately predict transient behaviors, which are key to the performance of discrete-time systems and hence to the performance of pipeline data converters.

This book presents a comprehensive, systematic approach to the development of vision system architectures that employ sensory-processing concurrency and parallel processing to meet the autonomy challenges posed by a variety of safety and surveillance applications.  Coverage includes a thorough analysis of resistive diffusion networks embedded within an image sensor array. This analysis supports a systematic approach to the design of spatial image filters and their implementation as vision chips in CMOS technology. The book also addresses system-level considerations pertaining to the embedding of these vision chips into vision-enabled wireless sensor networks.Describes a system-level approach for designing of vision devices and  embedding them into vision-enabled, wireless sensor networks; Surveys state-of-the-art, vision-enabled WSN nodes; Includes details of specifications and challenges of vision-enabled WSNs; Explains architectures for low-energy CMOS vision chips with embedded, programmable spatial filtering capabilities; Includes considerations pertaining to the integration of vision chips into off-the-shelf WSN platforms.

In this case study, different system alternatives are explored and a particular realization is completely developed.Illustrations, numerous plots from simulations and experiments, and supporting information in the form of charts and tables make Visual Inference and IoT Systems: A Practical Approach a clear and detailed guide to the topic.

In this case study, different system alternatives are explored and a particular realization is completely developed.Illustrations, numerous plots from simulations and experiments, and supporting information in the form of charts and tables make Visual Inference and IoT Systems: A Practical Approach a clear and detailed guide to the topic.

Aiming at the core of the problem, Reuse Based Methodologies and Tools in the Design of Analog and Mixed-Signal Integrated Circuits presents a framework for the reuse-based design of AMS circuits. The framework is founded on three key elements: (1) a CAD-supported hierarchical design flow that facilitates the incorporation of AMS reusable blocks, reduces the overall design time, and expedites the management of increasing AMS design complexity; (2) a complete, clear definition of the AMS reusable block, structured into three separate facets or views: the behavioral, structural, and layout facets, the first two for top-down electrical synthesis and bottom-up verification, the latter used during bottom-up physical synthesis; (3) the design for reusability set of tools, methods, and guidelines that, relying on intensive parameterization as well as on design knowledge capture and encapsulation, allows to produce fully reusable AMS blocks. Reuse Based Methodologies and Tools in the Design of Analog and Mixed-Signal Integrated Circuits features a very detailed, tutorial, and in-depth coverage of all issues and must-have properties of reusable AMS blocks, as well as a thorough description of the methods and tools necessary to implement them. For the first time, this has been done hierarchically, covering one by one the different stages of the design flow, allowing us to examine how the reusable block yields its benefits, both in design time and correct performance.