A Micro Power Floating Point Analog To Digital Converter
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Logarithmic Voltage-to-Time Converter for Analog-to-Digital Signal Conversion
Author | : Mauro Santos |
Publisher | : Springer |
Total Pages | : 117 |
Release | : 2019-04-05 |
Genre | : Technology & Engineering |
ISBN | : 3030159787 |
This book presents a novel logarithmic conversion architecture based on cross-coupled inverter. An overview of the current state of the art of logarithmic converters is given where most conventional logarithmic analog-to-digital converter architectures are derived or adapted from linear analog-to-digital converter architectures, implying the use of analog building blocks such as amplifiers. The conversion architecture proposed in this book differs from the conventional logarithmic architectures. Future possible studies on integrating calibration in the voltage to time conversion element and work on an improved conversion architecture derived from the architecture are also presented in this book.
A 1 V Floating-point Analog-to-Digital Converter for Portable Communication Devices
Author | : Takayuki Hayashi |
Publisher | : |
Total Pages | : 0 |
Release | : 1998 |
Genre | : |
ISBN | : |
With the growing demand for portable communications devices, power consumption has become increasingly critical in VLSI designs. In mixed-signal circuits, the push for lower supply voltage to reduce power dissipation in digital systems has forced analog systems to lower their supply voltage as well. This thesis deals with the design of a low power low voltage analog-to-digital converter (ADC) that operates from a single 1 V power supply. Two circuit techniques are utilized to enhance the performance of the converter. First, floating-point technique is employed to improve the dynamic range of the converter by providing a non-uniform quantization of the analog input. This allows the ADC to achieve a wide dynamic range without using high-resolution components. Second, current-mode technique is chosen because it offers characteristics such as good signal swings, high speed and small circuit area. The ADC was implemented using a 0.5 [mu]m, 1V CMOS process with low threshold voltage transistors. Simulation results of the core ADC cell indicate an 8-bit resolution while dissipating only 170 [mu]W. The complete floating-point ADC exhibits a dynamic range of 12 bits, a conversion time of 63 [mu]s and a power dissipation of 450 [mu]W. The total area excluding bonding pads is 1 mm 2.
Intelligent Integrated Media Communication Techniques
Author | : Jurij F. Tasic |
Publisher | : Springer Science & Business Media |
Total Pages | : 435 |
Release | : 2005-12-30 |
Genre | : Technology & Engineering |
ISBN | : 0306487187 |
This volume contains many examples and applied methods explaining the basic architecture of the mobile terminals. It includes sufficient introductory material to enabling even non-expert readers to understand the topics and to make a step towards system integration of complex future applications.
Modern Vibrational Spectroscopy and Micro-Spectroscopy
Author | : Max Diem |
Publisher | : John Wiley & Sons |
Total Pages | : 469 |
Release | : 2015-06-16 |
Genre | : Science |
ISBN | : 1118824989 |
Modern Vibrational Spectroscopy and Micro-Spectroscopy: Theory, Instrumentation and Biomedical Applications unites the theory and background of conventional vibrational spectroscopy with the principles of microspectroscopy. It starts with basic theory as it applies to small molecules and then expands it to include the large biomolecules which are the main topic of the book with an emphasis on practical experiments, results analysis and medical and diagnostic applications. This book is unique in that it addresses both the parent spectroscopy and the microspectroscopic aspects in one volume. Part I covers the basic theory, principles and instrumentation of classical vibrational, infrared and Raman spectroscopy. It is aimed at researchers with a background in chemistry and physics, and is presented at the level suitable for first year graduate students. The latter half of Part I is devoted to more novel subjects in vibrational spectroscopy, such as resonance and non-linear Raman effects, vibrational optical activity, time resolved spectroscopy and computational methods. Thus, Part 1 represents a short course into modern vibrational spectroscopy. Part II is devoted in its entirety to applications of vibrational spectroscopic techniques to biophysical and bio-structural research, and the more recent extension of vibrational spectroscopy to microscopic data acquisition. Vibrational microscopy (or microspectroscopy) has opened entirely new avenues toward applications in the biomedical sciences, and has created new research fields collectively referred to as Spectral Cytopathology (SCP) and Spectral Histopathology (SHP). In order to fully exploit the information contained in the micro-spectral datasets, methods of multivariate analysis need to be employed. These methods, along with representative results of both SCP and SHP are presented and discussed in detail in Part II.
Automation and Instrumentation for Power Plants
Author | : M. Ramamoorty |
Publisher | : Elsevier |
Total Pages | : 280 |
Release | : 2016-01-22 |
Genre | : Technology & Engineering |
ISBN | : 1483298884 |
An analysis of power systems, control hardware, modelling and simulation, instrumentation, and computers and distributed systems. The stability of plants and their interaction in a multi-machine system is also discussed, as well as an analysis of the values of LOFT ATWS EVENT for PWR and the new algorithm of on-line ELD for thermal power plants.