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Implementation Of A 10 Bit A Sar Adc Circuit Based On Voltage To Time Conversion
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Book Synopsis Implementation of a 10-bit A-SAR ADC Circuit Based on Voltage to Time Conversion by : Suresh Koyada
Download or read book Implementation of a 10-bit A-SAR ADC Circuit Based on Voltage to Time Conversion written by Suresh Koyada and published by . This book was released on 2016 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comparators are widely used in analog to digital converters. However, the scaling of CMOS technologies makes the design of low power voltage comparators difficult. In order to overcome this problem time-based comparators are introduced which are suitable for nanometer CMOS technology and low supply voltages. This thesis presents the transistor level implementation of a 10-bit time-based accelerated SAR ADC with a supply voltage of 0.5 V. The design increases the conversion speed compared to conventional SAR ADC by updating the upper bound and lower bound of the search space more aggressively. Various design issues, including optimal switch design, glitch minimization at the charge scaling capacitor array output are discussed. This design achieves a SNDR of 58.78dB at a sampling rate of 90.9kS/s and ENOB (effective number of bits) of 9.47 bits with a power consumption of 280nW.
Book Synopsis Accelerated Successive Approximation Technique for Analog to Digital Converter Design by : Ram Harshvardhan Radhakrishnan
Download or read book Accelerated Successive Approximation Technique for Analog to Digital Converter Design written by Ram Harshvardhan Radhakrishnan and published by . This book was released on 2015 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis work presents a novel technique to reduce the number of conversion cycles for Successive Approximation register (SAR) Analog to Digital Converters (ADC), thereby potentially improving the conversion speed as well as reducing its power consumption. Conventional SAR ADCs employ the binary search algorithm and they update only one bound, either the upper or lower bound, of the search space during one conversion cycle. The proposed method, referred to as the Accelerated-SAR or A-SAR, is capable of updating both the lower and upper bounds in a single conversion cycle. Even in cases that it can update only one bound, it does more aggressively. The proposed technique is implemented in a 10-bit SAR ADC circuit with 0.5V power supply and rail-to-rail input range. To cope with the ultra-low voltage design challenge, Time-to-Digital conversion techniques are used in the implementation. Important design issues are also discussed for the charge scaling array and Voltage Controlled Delay Lines (VCDL), which are important building blocks in the ADC implementation.
Book Synopsis Data Conversion Handbook by : Walt Kester
Download or read book Data Conversion Handbook written by Walt Kester and published by Newnes. This book was released on 2005 with total page 977 pages. Available in PDF, EPUB and Kindle. Book excerpt: This complete update of a classic handbook originally created by Analog Devices and never previously published offers the most complete and up-to-date reference available on data conversion, from the world authority on the subject. It describes in depth the theory behind and the practical design of data conversion circuits. It describes the different architectures used in A/D and D/A converters - including many advances that have been made in this technology in recent years - and provides guidelines on which types are best suited for particular applications. It covers error characterization and testing specifications, essential design information that is difficult to find elsewhere. The book also contains a wealth of practical application circuits for interfacing and supporting A/D and D/A converters within an electronic system. In short, everything an electronics engineer needs to know about data converters can be found in this volume, making it an indispensable reference with broad appeal. The accompanying CD-ROM provides software tools for testing and analyzing data converters as well as a searchable pdf version of the text. * brings together a huge amount of information impossible to locate elsewhere. * many recent advances in converter technology simply aren't covered in any other book. * a must-have design reference for any electronics design engineer or technician
Book Synopsis Principles of Data Conversion System Design by : Behzad Razavi
Download or read book Principles of Data Conversion System Design written by Behzad Razavi and published by Wiley-IEEE Press. This book was released on 1995 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: This advanced text and reference covers the design and implementation of integrated circuits for analog-to-digital and digital-to-analog conversion. It begins with basic concepts and systematically leads the reader to advanced topics, describing design issues and techniques at both circuit and system level. Gain a system-level perspective of data conversion units and their trade-offs with this state-of-the art book. Topics covered include: sampling circuits and architectures, D/A and A/D architectures; comparator and op amp design; calibration techniques; testing and characterization; and more!
Book Synopsis Investigation of 10-bit SAR ADC Using Flip-flip Bypass Circuit by : Robert Alexander Fontaine
Download or read book Investigation of 10-bit SAR ADC Using Flip-flip Bypass Circuit written by Robert Alexander Fontaine and published by . This book was released on 2013 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Successive Approximation Register (SAR) Analog to Digital Converter (ADC) is power efficient and operates at moderate resolution. However, the conversion speed is limited by settling time and control logic constraints. This report investigates a flip-flop bypass technique to reduce the required conversion time. A conventional design and flip-flop bypass design are simulated using a 0.18[micrometer] CMOS process. Background and design of the control logic, comparator, capacitive array, and switches for implementing the SAR ADCs is presented with the emphasis on optimizing for conversion speed.
Book Synopsis Charge-Sharing SAR ADCs for Low-Voltage Low-Power Applications by : Taimur Rabuske
Download or read book Charge-Sharing SAR ADCs for Low-Voltage Low-Power Applications written by Taimur Rabuske and published by Springer. This book was released on 2016-08-02 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces readers to the potential of charge-sharing (CS) successive approximation register (SAR) analog-to-digital converters (ADCs), while providing extensive analysis of the factors that limit the performance of the CS topology. The authors present guidelines and useful techniques for mitigating the limitations of the architecture, while focusing on the implementation under restricted power budgets and voltage supplies.
Book Synopsis Analog-Digital Conversion by : Analog Devices, inc
Download or read book Analog-Digital Conversion written by Analog Devices, inc and published by . This book was released on 2004-01-01 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis CMOS Data Converters for Communications by : Mikael Gustavsson
Download or read book CMOS Data Converters for Communications written by Mikael Gustavsson and published by Springer Science & Business Media. This book was released on 2005-12-15 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: CMOS Data Converters for Communications distinguishes itself from other data converter books by emphasizing system-related aspects of the design and frequency-domain measures. It explains in detail how to derive data converter requirements for a given communication system (baseband, passband, and multi-carrier systems). The authors also review CMOS data converter architectures and discuss their suitability for communications. The rest of the book is dedicated to high-performance CMOS data converter architecture and circuit design. Pipelined ADCs, parallel ADCs with an improved passive sampling technique, and oversampling ADCs are the focus for ADC architectures, while current-steering DAC modeling and implementation are the focus for DAC architectures. The principles of the switched-current and the switched-capacitor techniques are reviewed and their applications to crucial functional blocks such as multiplying DACs and integrators are detailed. The book outlines the design of the basic building blocks such as operational amplifiers, comparators, and reference generators with emphasis on the practical aspects. To operate analog circuits at a reduced supply voltage, special circuit techniques are needed. Low-voltage techniques are also discussed in this book. CMOS Data Converters for Communications can be used as a reference book by analog circuit designers to understand the data converter requirements for communication applications. It can also be used by telecommunication system designers to understand the difficulties of certain performance requirements on data converters. It is also an excellent resource to prepare analog students for the new challenges ahead.
Book Synopsis Wideband Continuous-time ΣΔ ADCs, Automotive Electronics, and Power Management by : Andrea Baschirotto
Download or read book Wideband Continuous-time ΣΔ ADCs, Automotive Electronics, and Power Management written by Andrea Baschirotto and published by Springer. This book was released on 2016-08-12 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is based on the 18 tutorials presented during the 25th workshop on Advances in Analog Circuit Design. Expert designers present readers with information about a variety of topics at the frontier of analog circuit design, including low-power and energy-efficient analog electronics, with specific contributions focusing on the design of continuous-time sigma-delta modulators, automotive electronics, and power management. This book serves as a valuable reference to the state-of-the-art, for anyone involved in analog circuit research and development.
Book Synopsis Analog Interfacing to Embedded Microprocessor Systems by : Stuart R. Ball
Download or read book Analog Interfacing to Embedded Microprocessor Systems written by Stuart R. Ball and published by Elsevier. This book was released on 2004 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: System Design; Digital to Analog Converters; Sensors; Time-Based Measurements; Output Control Methods; Solenoids, Relays, and Other Analog Outputs; Motors; EMI; High Precision Applications; Standard Interfaces.
Book Synopsis Next-Generation ADCs, High-Performance Power Management, and Technology Considerations for Advanced Integrated Circuits by : Andrea Baschirotto
Download or read book Next-Generation ADCs, High-Performance Power Management, and Technology Considerations for Advanced Integrated Circuits written by Andrea Baschirotto and published by Springer Nature. This book was released on 2019-10-24 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is based on the 18 tutorials presented during the 28th workshop on Advances in Analog Circuit Design. Expert designers present readers with information about a variety of topics at the frontier of analog circuit design, including next-generation analog-to-digital converters , high-performance power management systems and technology considerations for advanced IC design. For anyone involved in analog circuit research and development, this book will be a valuable summary of the state-of-the-art in these areas. Provides a summary of the state-of-the-art in analog circuit design, written by experts from industry and academia; Presents material in a tutorial-based format; Includes coverage of next-generation analog-to-digital converters, high-performance power management systems, and technology considerations for advanced IC design.
Author :Vishnu Unnikrishnan Publisher :Linköping University Electronic Press ISBN 13 :9176856240 Total Pages :52 pages Book Rating :4.1/5 (768 download)
Book Synopsis Design of VCO-based ADCs by : Vishnu Unnikrishnan
Download or read book Design of VCO-based ADCs written by Vishnu Unnikrishnan and published by Linköping University Electronic Press. This book was released on 2017-03-28 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today's complex electronic systems with billions of transistors on a single die are enabled by the aggressive scaling down of the device feature size at an exponential rate as predicted by the Moore's law. Digital circuits benefit from technology scaling to become faster, more energy efficient as well as more area efficient as the feature size is scaled down. Moreover, digital design also benefits from mature CAD tools that simplify the design and cross-technology porting of complex systems, leveraging on a cell-based design methodology. On the other hand, the design of analog circuits is getting increasingly difficult as the feature size scales down into the deep nanometer regime due to a variety of reasons like shrinking voltage headroom, reducing intrinsic gain of the devices, increasing noise coupling between circuit nodes due to shorter distances etc. Furthermore, analog circuits are still largely designed with a full custom design ow that makes their design and porting tedious, slow, and expensive. In this context, it is attractive to consider realizing analog/mixed-signal circuits using standard digital components. This leads to scaling-friendly mixed-signal blocks that can be designed and ported using the existing CAD framework available for digital design. The concept is already being applied to mixed-signal components like frequency synthesizers where all-digital architectures are synthesized using standard cells as basic components. This can be extended to other mixed-signal blocks like digital-to-analog and analog to- digital converters as well, where the latter is of particular interest in this thesis. A voltage-controlled oscillator (VCO)-based analog-to-digital converter (ADC) is an attractive architecture to achieve all-digital analog-to digital conversion due to favorable properties like shaping of the quantization error, inherent anti-alias filtering etc. Here a VCO operates as a signal integrator as well as a quantizer. A converter employing a ring oscillator as the VCO lends itself to an all-digital implementation. In this dissertation, we explore the design of VCO-based ADCs synthesized using digital standard cells with the long-term goal of achieving high performance data converters built from low accuracy switch components. In a first step, an ADC is designed using vendor supplied standard cells and fabricated in a 65 nm CMOS process. The converter delivers an 8-bit ENOB over a 25 MHz bandwidth while consuming 3.3 mW of power resulting in an energy efficiency of 235 fJ/step (Walden FoM). Then we utilize standard digital CAD tools to synthesize converter designs that are fully described using a hardware description language. A polynomial-based digital post-processing scheme is proposed to correct for the VCO nonlinearity. In addition, pulse modulation schemes like delta modulation and asynchronous sigma-delta modulation are used as a signal pre-coding scheme, in an attempt to reduce the impact of VCO nonlinearity on converter performance. In order to investigate the scaling benefits of all-digital data conversion, a VCO-based converter is designed in a 28 nm CMOS process. The design delivers a 13.4-bit ENOB over a 5 MHz bandwidth achieving an energy efficiency of 4.3 fJ/step according to post-synthesis schematic simulation, indicating that such converters have the potential of achieving good performance in deeply scaled processes by exploiting scaling benefits. Furthermore, large conversion errors caused by non-ideal sampling of the oscillator phase are studied. An encoding scheme employing ones counters is proposed to code the sampled ring oscillator output into a number, which is resilient to a class of sampling induced errors modeled by temporal reordering of the transitions in the ring. The proposed encoding reduces the largest error caused by random reordering of up to six subsequent bits in the sampled signal from 31 to 2 LSBs. Finally, the impact of process, voltage, and temperature (PVT) variations on the performance while operating the converter from a subthreshold supply is investigated. PVT-adaptive solutions are suggested as a means to achieve energy-efficient operation over a wide range of PVT conditions.
Book Synopsis Time-interleaved Analog-to-Digital Converters by : Simon Louwsma
Download or read book Time-interleaved Analog-to-Digital Converters written by Simon Louwsma and published by Springer Science & Business Media. This book was released on 2010-09-08 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Time-interleaved Analog-to-Digital Converters describes the research performed on low-power time-interleaved ADCs. A detailed theoretical analysis is made of the time-interleaved Track & Hold, since it must be capable of handling signals in the GHz range with little distortion, and minimal power consumption. Timing calibration is not attractive, therefore design techniques are presented which do not require timing calibration. The design of power efficient sub-ADCs is addressed with a theoretical analysis of a successive approximation converter and a pipeline converter. It turns out that the first can consume about 10 times less power than the latter, and this conclusion is supported by literature. Time-interleaved Analog-to-Digital Converters describes the design of a high performance time-interleaved ADC, with much attention for practical design aspects, aiming at both industry and research. Measurements show best-inclass performance with a sample-rate of 1.8 GS/s, 7.9 ENOBs and a power efficiency of 1 pJ/conversion-step.
Book Synopsis Inverter-Based Circuit Design Techniques for Low Supply Voltages by : Rakesh Kumar Palani
Download or read book Inverter-Based Circuit Design Techniques for Low Supply Voltages written by Rakesh Kumar Palani and published by Springer. This book was released on 2016-10-14 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes intuitive analog design approaches using digital inverters, providing filter architectures and circuit techniques enabling high performance analog circuit design. The authors provide process, supply voltage and temperature (PVT) variation-tolerant design techniques for inverter based circuits. They also discuss various analog design techniques for lower technology nodes and lower power supply, which can be used for designing high performance systems-on-chip.
Book Synopsis A Low-power, Low-area 10-bit SAR ADC with Length-based Capacitive DAC by : Zhili Pan
Download or read book A Low-power, Low-area 10-bit SAR ADC with Length-based Capacitive DAC written by Zhili Pan and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A 2.5 V single-ended 10-bit successive-approximation-register analog-to-digital converter (SAR ADC) based on the TSMC 65 nm CMOS process is designed with the goal of achieving low power consumption (33.63 pJ/sample) and small area (2874 μm2 ). It utilizes a novel length-based capacitive digital-to-analog converter (CDAC) layout to achieve low total capacitance for power efficiency, and a custom static asynchronous logic to free the dependence on a high-frequency external clock source. Two test chips have been designed and the problems found through testing the first chip are analyzed. Multiple improved versions of the ADC with minor variations are implemented on the second test chip for performance evaluation, and the test method is explained.
Book Synopsis Generalized Low-Voltage Circuit Techniques for Very High-Speed Time-Interleaved Analog-to-Digital Converters by : Sai-Weng Sin
Download or read book Generalized Low-Voltage Circuit Techniques for Very High-Speed Time-Interleaved Analog-to-Digital Converters written by Sai-Weng Sin and published by Springer Science & Business Media. This book was released on 2010-09-29 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analog-to-Digital Converters (ADCs) play an important role in most modern signal processing and wireless communication systems where extensive signal manipulation is necessary to be performed by complicated digital signal processing (DSP) circuitry. This trend also creates the possibility of fabricating all functional blocks of a system in a single chip (System On Chip - SoC), with great reductions in cost, chip area and power consumption. However, this tendency places an increasing challenge, in terms of speed, resolution, power consumption, and noise performance, in the design of the front-end ADC which is usually the bottleneck of the whole system, especially under the unavoidable low supply-voltage imposed by technology scaling, as well as the requirement of battery operated portable devices. Generalized Low-Voltage Circuit Techniques for Very High-Speed Time-Interleaved Analog-to-Digital Converters will present new techniques tailored for low-voltage and high-speed Switched-Capacitor (SC) ADC with various design-specific considerations.
Book Synopsis Digitally Assisted Pipeline ADCs by : Boris Murmann
Download or read book Digitally Assisted Pipeline ADCs written by Boris Murmann and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Digitally Assisted Pipeline ADCs: Theory and Implementation explores the opportunity to reduce ADC power dissipation by leveraging digital signal processing capabilities in fine line integrated circuit technology. The described digitally assisted pipelined ADC uses a statistics-based system identification technique as an enabling element to replace precision residue amplifiers with simple open-loop gain stages. The digital compensation of analog circuit distortion eliminates one key factor in the classical noise-speed-linearity constraint loop and thereby enables a significant power reduction. Digitally Assisted Pipeline ADCs: Theory and Implementation describes in detail the implementation and measurement results of a 12-bit, 75-MSample/sec proof-of-concept prototype. The Experimental converter achieves power savings greater than 60% over conventional implementations. Digitally Assisted Pipeline ADCs: Theory and Implementation will be of interest to researchers and professionals interested in advances of state-of-the-art in A/D conversion techniques.
