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Journal articles on the topic 'Analog-to-digital converters for imaging applications'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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1

Pratte, Jean-François, Frédéric Nolet, Samuel Parent, et al. "3D Photon-To-Digital Converter for Radiation Instrumentation: Motivation and Future Works." Sensors 21, no. 2 (2021): 598. http://dx.doi.org/10.3390/s21020598.

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Analog and digital SiPMs have revolutionized the field of radiation instrumentation by replacing both avalanche photodiodes and photomultiplier tubes in many applications. However, multiple applications require greater performance than the current SiPMs are capable of, for example timing resolution for time-of-flight positron emission tomography and time-of-flight computed tomography, and mitigation of the large output capacitance of SiPM array for large-scale time projection chambers for liquid argon and liquid xenon experiments. In this contribution, the case will be made that 3D photon-to-d

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Postek, M. T., and A. E. Vladar. "The bright future of digital imaging in scanning electron microscopy." Proceedings, annual meeting, Electron Microscopy Society of America 51 (August 1, 1993): 768–69. http://dx.doi.org/10.1017/s0424820100149672.

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One of the major advancements applied to scanning electron microscopy (SEM) during the past 10 years has been the development and application of digital imaging technology. Advancements in technology, notably the availability of less expensive, high-density memory chips and the development of high speed analog-to-digital converters, mass storage and high performance central processing units have fostered this revolution. Today, most modern SEM instruments have digital electronics as a standard feature. These instruments, generally have 8 bit or 256 gray levels with, at least, 512 × 512 pixel d

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Postek, M. T., and A. E. Vladar. "The Bright Future of Digital Imaging in Scanning Electron Microscopy." Microscopy Today 2, no. 4 (1994): 19–20. http://dx.doi.org/10.1017/s1551929500065573.

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One of the major advancements applied to scanning electron microscopy (SEM) during the past 10 years has been the development and application of digital imaging technology. Advancements in technology, notably the availability of less expensive, high-density memory chips and the development of high speed analog-to-digital converters, mass storage and high performance central processing units have fostered this revolution. Today, most modern SEM instruments have digital electronics as a standard feature. These instruments, generally have 8 bit or 256 gray levels with, at least, 512 X 512 pixel d

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Würfel, D., M. Ruß, R. Lerch, D. Weiler, P. Yang, and H. Vogt. "An uncooled VGA-IRFPA with novel readout architecture." Advances in Radio Science 9 (July 29, 2011): 107–10. http://dx.doi.org/10.5194/ars-9-107-2011.

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Abstract. An uncooled VGA Infrared Focal Plane Array (IRFPA) based on microbolometers with a pixel pitch of 25 μm for thermal imaging applications is presented. The IRFPA has a 16-bit digital video data output at a frame rate of 30 Hz. Thousands of Analog to Digital Converters (ADCs) are located under the microbolometer array. One ADC consists of a Sigma-Delta-Modulator (SDM) of 2nd order and a decimation filter. It is multiplexed for a certain amount of microbolometers arranged in a so called "cluster". In the 1st stage of the SDM the microbolometer current is integrated time-continuously. Th

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Chuirazzi, William, Aaron Craft, Burkhard Schillinger, Steven Cool, and Alessandro Tengattini. "Boron-Based Neutron Scintillator Screens for Neutron Imaging." Journal of Imaging 6, no. 11 (2020): 124. http://dx.doi.org/10.3390/jimaging6110124.

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In digital neutron imaging, the neutron scintillator screen is a limiting factor of spatial resolution and neutron capture efficiency and must be improved to enhance the capabilities of digital neutron imaging systems. Commonly used neutron scintillators are based on 6LiF and gadolinium oxysulfide neutron converters. This work explores boron-based neutron scintillators because 10B has a neutron absorption cross-section four times greater than 6Li, less energetic daughter products than Gd and 6Li, and lower γ-ray sensitivity than Gd. These factors all suggest that, although borated neutron scin

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Rothberg, Jonathan M., Tyler S. Ralston, Alex G. Rothberg, et al. "Ultrasound-on-chip platform for medical imaging, analysis, and collective intelligence." Proceedings of the National Academy of Sciences 118, no. 27 (2021): e2019339118. http://dx.doi.org/10.1073/pnas.2019339118.

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Over the past half-century, ultrasound imaging has become a key technology for assessing an ever-widening range of medical conditions at all stages of life. Despite ultrasound’s proven value, expensive systems that require domain expertise in image acquisition and interpretation have limited its broad adoption. The proliferation of portable and low-cost ultrasound imaging can improve global health and also enable broad clinical and academic studies with great impact on the fields of medicine. Here, we describe the design of a complete ultrasound-on-chip, the first to be cleared by the Food and

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Hu, Chang-Lin, Guo-Zua Wu, Chih-Chi Chang, and Meng-Lin Li. "Acoustic-Field Beamforming for Low-Power Portable Ultrasound." Ultrasonic Imaging 43, no. 4 (2021): 175–85. http://dx.doi.org/10.1177/01617346211013473.

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Portable ultrasound has been extensively used for diagnostic applications in health monitoring, emergency rooms, and ambulances. However, these handheld ultrasound systems may suffer from heat and battery issues attributed to the large power consumption of the transmitter. Additionally, the largest portion of the direct current (DC) power consumption can be attributed to the amplifier in the digital-to-analog converter (DAC) of the transmitter and to the analog-to-digital converter (ADC) of the receiver. Therefore, the number of transmit/receive channels in a portable ultrasound instrument is

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Blanchard, François, Joel Edouard Nkeck, Dominique Matte, Riad Nechache, and David G. Cooke. "A Low-Cost Terahertz Camera." Applied Sciences 9, no. 12 (2019): 2531. http://dx.doi.org/10.3390/app9122531.

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Cost effective imaging is required for a wide range of scientific and engineering applications. For electromagnetic waves in the terahertz (THz) frequency range, a key missing element that has prevented widespread applications in this spectral range is an inexpensive and efficient imaging device. In recent years, vanadium oxide based thermal sensors have rapidly entered the market for night vision capability. At the same time, sensors based on this technology have been applied to the THz domain, but with two orders of magnitude larger pricing range. Here we show that, with a simple modificatio

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9

Milatz, Marius. "Application of single-board computers in experimental research on unsaturated soils." E3S Web of Conferences 195 (2020): 02022. http://dx.doi.org/10.1051/e3sconf/202019502022.

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In this contribution, the application of single-board computers for the investigation of the hydro-mechanical behaviour of unsaturated granular soils is presented. Single-board computers, such as the Raspberry Pi or Arduino, have recently experienced a hype of applications in school and university teaching, in the maker scene, amongst hobbyists, but also in research. In combination with easy to learn and open programming languages, such as Python, individual experimental set-ups for research in unsaturated soil mechanics, using actuators and sensors can be easily developed with the help of dif

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Li, Ya Qin, Dan Chen, and Cao Yuan. "An Improved Hardware System of Excitations Pulse on X-Waves with Direct Digital Synthesizer." Applied Mechanics and Materials 329 (June 2013): 382–86. http://dx.doi.org/10.4028/www.scientific.net/amm.329.382.

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Limited diffracting waves such X-wave have great potential applications in the enlargement of the field depth in acoustic imaging systems. In practice, the generation of real time X-wave ultrasonic fields is a complex technology which involves precise and specific voltage for the excitations for each distinct array element. In order to simplify hardware system of excitations pulse in X-wave, the complex excitations were instead by simple driving, which combination of rectangular and triangular driving pulses. The improved hardware system consists a computer for communication with the circuit,

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Ximenes, Augusto, Preethi Padmanabhan, and Edoardo Charbon. "Mutually Coupled Time-to-Digital Converters (TDCs) for Direct Time-of-Flight (dTOF) Image Sensors." Sensors 18, no. 10 (2018): 3413. http://dx.doi.org/10.3390/s18103413.

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Direct time-of-flight (dTOF) image sensors require accurate and robust timing references for precise depth calculation. On-chip timing references are well-known and understood, but for imaging systems where several thousands of pixels require seamless references, area and power consumption limit the use of more traditional synthesizers, such as phase/delay-locked loops (PLLs/DLLs). Other methods, such as relative timing measurement (start/stop), require constant foreground calibration, which is not feasible for outdoor applications, where conditions of temperature, background illumination, etc

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Griffiths, A. D., J. Herrnsdorf, J. J. D. McKendry, M. J. Strain, and M. D. Dawson. "Gallium nitride micro-light-emitting diode structured light sources for multi-modal optical wireless communications systems." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378, no. 2169 (2020): 20190185. http://dx.doi.org/10.1098/rsta.2019.0185.

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Gallium nitride-based light-emitting diodes (LEDs) have revolutionized the lighting industry with their efficient generation of blue and green light. While broad-area (square millimetre) devices have become the dominant LED lighting technology, fabricating LEDs into micro-scale pixels (micro-LEDs) yields further advantages for optical wireless communications (OWC), and for the development of smart-lighting applications such as tracking and imaging. The smaller active areas of micro-LEDs result in high current density operation, providing high modulation bandwidths and increased optical power d

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13

Wepman, J. A. "Analog-to-digital converters and their applications in radio receivers." IEEE Communications Magazine 33, no. 5 (1995): 39–45. http://dx.doi.org/10.1109/35.393000.

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Stojce Ilcev, Dimov. "Introduction to stand alone data converters review, analysis and design orientation." International Journal of Engineering & Technology 9, no. 3 (2020): 820. http://dx.doi.org/10.14419/ijet.v9i3.31057.

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This paper includes a basic review, analysis, and interesting insights, oriented to designers when power consumption is a critical constraint, of Stand-Alone Data Converters. These data converters are an indispensable part of the analog design technique and the only bridge to establish an adequate communication link between analog and digital devices. In fact, this article is dedicated to showing the principal types of the analog-to-digital converters (ADC) and digital-to-analog converters (DAC) families of data converters popular in modern analog design techniques. In fact, these data convert

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15

Murphy, James. "Development of high performance analog-to-digital converters for defense applications." Computer Standards & Interfaces 21, no. 2 (1999): 98. http://dx.doi.org/10.1016/s0920-5489(99)91920-7.

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16

Ulyashin, Aleksander, and Aleksander Velichko. "Comparative analysis of methods for constructing analog-to-digital converters." Transaction of Scientific Papers of the Novosibirsk State Technical University, no. 4 (December 18, 2020): 38–49. http://dx.doi.org/10.17212/2307-6879-2020-4-38-49.

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This paper is devoted to the comparative analysis of modern integrated analog-to-digital converters (ADCs). At the moment, a number of foreign companies, such as Analog Devices, Texas Instruments and Microchip, produce ADCs in integrated design. Each manufacturer uses its own method of implementing the device. The main task of such devices is to convert voltage to binary code. ADCs are used wherever it is necessary to receive an analog signal and process it in digital form. Examples include applications such as communications and telecommunications, various radio systems, and measurement techn

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Kelly, Brandon M., Alexander T. DiLello, and David W. Graham. "Reconfigurable Analog Preprocessing for Efficient Asynchronous Analog-to-Digital Conversion." Journal of Low Power Electronics and Applications 9, no. 3 (2019): 25. http://dx.doi.org/10.3390/jlpea9030025.

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Wearable medical devices, wireless sensor networks, and other energy-constrained sensing devices are often concerned with finding specific data within more-complex signals while maintaining low power consumption. Traditional analog-to-digital converters (ADCs) can capture the sensor information at a high resolution to enable a subsequent digital system to process for the desired data. However, traditional ADCs can be inefficient for applications that only require specific points of data. This work offers an alternative path to lower the energy expenditure in the quantization stage—asynchronous

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Kidder, G. W. "Resolution improvement by modulation of analog-to-digital converters." Bioinformatics 4, no. 3 (1988): 331–35. http://dx.doi.org/10.1093/bioinformatics/4.3.331.

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19

FEELY, ORLA, and LEON O. CHUA. "NONLINEAR DYNAMICS OF A CLASS OF ANALOG-TO-DIGITAL CONVERTERS." International Journal of Bifurcation and Chaos 02, no. 02 (1992): 325–40. http://dx.doi.org/10.1142/s021812749200032x.

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Oversampled sigma-delta modulators are finding widespread use in audio and other signal processing applications, due to their simple structure and robustness to circuit imperfections. Exact analyses of the system are complicated by the presence of a discontinuous nonlinear element—a one-bit quantizer. In this paper, we study the dynamics of the one-dimensional mapping which models the behavior of the single-loop modulator. This mapping has a discontinuity at the origin and constant slope at all other points. With slope one, the dynamics in the region of interest reduce to those of the rotation

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Takahashi, Tomomi, Takashi Oshima, and Taizo Yamawaki. "Novel Digitally Assisted High-Speed High-Resolution Analog-to-Digital Converters." Journal of The Institute of Image Information and Television Engineers 64, no. 2 (2010): 241–43. http://dx.doi.org/10.3169/itej.64.241.

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21

Quenzer-Hohmuth, Samuel, Thoralf Rosahl, Steffen Ritzmann, and Bernhard Wicht. "Challenges and implementation aspects of switched-mode power supplies with digital control for automotive applications." Advances in Radio Science 14 (September 28, 2016): 85–90. http://dx.doi.org/10.5194/ars-14-85-2016.

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Abstract. Switched-mode power supplies (SMPS) convert an input DC-voltage into a higher or lower output voltage. In automotive, analog control is mostly used in order to keep the required output voltages constant and resistant to disturbances. The design of robust analog control for SMPS faces parameter variations of integrated and external passive components. Using digital control, parameter variations can be eliminated and the required area for the integrated circuit can be reduced at the same time. Digital control design bears challenges like the prevention of limit cycle oscillations and c

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Yurish, Sergey Y. "Advanced Analog-to-Digital Conversion Using Voltage-to-Frequency Converters for Remote Sensors." Key Engineering Materials 381-382 (June 2008): 623–26. http://dx.doi.org/10.4028/www.scientific.net/kem.381-382.623.

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This paper presents an advanced analog-to-digital conversion technique based on a voltage-to-frequency-to-digital conversion that is suitable for remote sensors, telemetry applications and multichannel data acquisition systems. A voltage-to-frequency conversion part can be based, for example, on high performance, charge-balance voltage-to-frequency converter (VFC), where monostable is replaced by a bistable, driven by an external clock, or other existing high performance VFCs. The frequency-to-digital converter “bottleneck” problem in such promised ADC scheme was solved due to proposed advance

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Freitas, Luis Miguel Carvalho, and Fernando Morgado-Dias. "Design Improvements on Fast, High-Order, Incremental Sigma-Delta ADCs for Low-Noise Stacked CMOS Image Sensors." Electronics 10, no. 16 (2021): 1936. http://dx.doi.org/10.3390/electronics10161936.

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Modern CMOS imaging devices are present everywhere, in the form of line, area and depth scanners. These image devices can be used in the automotive field, in industrial applications, in the consumer’s market, and in various medical and scientific areas. Particularly in industrial and scientific applications, the low-light noise performance or the high dynamic-range features are often the cases of interest, combined with low power dissipation and high frame rates. In this sense, the noise floor performance and the power consumption are the focus of this work, given that both are interlinked and

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Sharma, Sonia, Chieh-An Cheng, Svette Reina Merden Santiago, et al. "Aggregation-induced negative differential resistance in graphene oxide quantum dots." Physical Chemistry Chemical Physics 23, no. 31 (2021): 16909–14. http://dx.doi.org/10.1039/d1cp01529j.

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Lewis, S. H. "Optimizing the stage resolution in pipelined, multistage, analog-to-digital converters for video-rate applications." IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing 39, no. 8 (1992): 516–23. http://dx.doi.org/10.1109/82.168943.

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Watson, Jeff, and Maithil Pachchigar. "A Low Power, Precision SAR Analog to Digital Converter for High Temperature Applications." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2014, HITEC (2014): 000053–57. http://dx.doi.org/10.4071/hitec-ta26.

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A growing number of industries are calling for low power electronics that operate reliably at temperatures of 175°C and higher. Many of these applications require a precision data acquisition signal chain in order to digitize analog data so that it can be collected and processed. Designing circuits that meet these needs can be very challenging, requiring a data converter that can deliver high performance and reliability in these harsh environments. There are currently a very limited number of integrated circuits commercially available that are specified for operation at these temperatures, and

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Devgan, Paul. "A Review of Optoelectronic Oscillators for High Speed Signal Processing Applications." ISRN Electronics 2013 (April 29, 2013): 1–16. http://dx.doi.org/10.1155/2013/401969.

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The Optoelectronic Oscillator (OEO) was first demonstrated in 1996 as a low phase noise RF source. Low phase noise RF sources have uses for multiple applications, ranging from analog to digital converters to radar to metrology. In the past sixteen years, the OEO has been shown to be useful for other signal processing applications. This paper will provide a background of the OEO’s principles of operation, as well as multiple examples of signal processing applications where the OEO can be used. The OEO can be applied to both analog and digital problems, providing new techniques to solve these ch

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LEUNG, F. H. F., L. K. WONG, P. K. S. TAM, and H. K. LAM. "REALIZATION OF ANALOG FUZZY LOGIC CONTROL FOR PWM BOOST CONVERTERS." Journal of Circuits, Systems and Computers 08, no. 03 (1998): 411–19. http://dx.doi.org/10.1142/s0218126698000213.

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Fuzzy logic controllers (FLCs) have been widely used in many applications. However, they are usually implemented digitally by expensive digital signal processors (DSPs), and the performance is restricted by the sampling period. These disadvantages have limited the applications of FLCs to industrial systems such as switch mode power converters. In this paper, an analog FLC implemented by low-cost devices is proposed. Through analog circuitry, features such as membership function shaping, rule inference and defuzzification are realized. The controller is successfully applied to regulate a PWM bo

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Momeni, Mahdi, and Mohammad Yavari. "Shifting the sampled input signal in successive approximation register analog‐to‐digital converters to reduce the digital‐to‐analog converter switching energy and area." International Journal of Circuit Theory and Applications 48, no. 11 (2020): 1873–86. http://dx.doi.org/10.1002/cta.2852.

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Stankus, Martin, Michal Prauzek, and Jakub Jirka. "Universal Wireless System for Advanced Biomedical Applications." Applied Mechanics and Materials 330 (June 2013): 1049–53. http://dx.doi.org/10.4028/www.scientific.net/amm.330.1049.

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This paper deals with implementation of wireless communication into a biomedical system including presentation of acquired experience. The aim of the paper is usage of universal wireless system for advanced biomedical applications. There are many biomedical applications with prospect of implementation of wireless communication. IEEE 802.11 wireless module WISMC01 by Laird is one of commercially available wireless solutions. Module provides various communication interfaces and inputs - RS232, analog to digital converters and digital GPIO pins among others. Module supports proprietal scripting l

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Alvero-Gonzalez, Leidy Mabel, Victor Medina, Vahur Kampus, Susana Paton, Luis Hernandez, and Eric Gutierrez. "Ring-Oscillator with Multiple Transconductors for Linear Analog-to-Digital Conversion." Electronics 10, no. 12 (2021): 1408. http://dx.doi.org/10.3390/electronics10121408.

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This paper proposes a new circuit-based approach to mitigate nonlinearity in open-loop ring-oscillator-based analog-to-digital converters (ADCs). The approach consists of driving a current-controlled oscillator (CCO) with several transconductors connected in parallel with different bias conditions. The current injected into the oscillator can then be properly sized to linearize the oscillator, performing the inverse current-to-frequency function. To evaluate the approach, a circuit example has been designed in a 65-nm CMOS process, leading to a more than 3-ENOB enhancement in simulation for a

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Moosazadeh, Tohid, and Mohammad Yavari. "A pseudo-differential current-reuse structure for opamp-sharing pipelined analog-to-digital converters." International Journal of Circuit Theory and Applications 43, no. 7 (2014): 917–28. http://dx.doi.org/10.1002/cta.1983.

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Nazarathy, Moshe, and Ioannis Tomkos. "Accurate Power-Efficient Format-Scalable Multi-Parallel Optical Digital-to-Analogue Conversion." Photonics 8, no. 2 (2021): 38. http://dx.doi.org/10.3390/photonics8020038.

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In optical transmitters generating multi-level constellations, optical modulators are preceded by Electronic Digital-to-Analog-Converters (eDAC). It is advantageous to use eDAC-free Optical Analog to Digital Converters (oDAC) to directly convert digital bitstreams into multilevel PAM/QAM optical signals. State-of-the-art oDACs are based on Segmented Mach-Zehnder-Modulators (SEMZM) using multiple modulation segments strung along the MZM waveguides to serially accumulate binary-modulated optical phases. Here we aim to assess performance limits of the Serial oDACs (SEMZM) and introduce an alterna

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Ta, Van-Thanh, Van-Phuc Hoang, Van-Phu Pham, and Cong-Kha Pham. "An Improved All-Digital Background Calibration Technique for Channel Mismatches in High Speed Time-Interleaved Analog-to-Digital Converters." Electronics 9, no. 1 (2020): 73. http://dx.doi.org/10.3390/electronics9010073.

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The time-interleaved analog-to-digital converters (TIADCs), performance is seriously affected by channel mismatches, especially for the applications in the next-generation communication systems. This work presents an improved all-digital background calibration technique for TIADCs by combining the Hadamard transform for calibrating gain and timing mismatches and averaging for offset mismatch cancellation. The numerical simulation results show that the proposed calibration technique completely suppresses the spurious images due to the channel mismatches at the output spectrum, which increases t

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Kumar Y, L. V. Santosh. "Design and Implementation of SAR-ADC for Medical Electronic Applications." International Journal of Advanced Research in Computer Science and Software Engineering 8, no. 5 (2018): 55. http://dx.doi.org/10.23956/ijarcsse.v8i5.665.

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in today’s advance electronic and communication systems the role of high accuracy analog to digital converters are of great importance. Nowadays, a larger percentage of mixed-signal applications requires for health care systems. Also the speed of the chosen ADC design matters a lot as we are connected with the real world signals. SAR based ADC will provides us a better solution for various analog to digital systems. It is an essential device whenever data from the analog world, through sensors or transducers, should be digitally processed or when transmitting data between chips through either

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Lee, Jieun, Changmin Choi, Sungwook Park, et al. "Ultra-energy-efficient analog-to-digital converters based on single-electron transistor/CMOS hybrid technology for biomedical applications." Semiconductor Science and Technology 24, no. 11 (2009): 115007. http://dx.doi.org/10.1088/0268-1242/24/11/115007.

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Yadav, Nandakishor, Youngbae Kim, Mahmoud Alashi, and Kyuwon Ken Choi. "Sensitive, Linear, Robust Current-To-Time Converter Circuit for Vehicle Automation Application." Electronics 9, no. 3 (2020): 490. http://dx.doi.org/10.3390/electronics9030490.

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Voltage-to-time and current-to-time converters have been used in many recent works as a voltage-to-digital converter for artificial intelligence applications. In general, most of the previous designs use the current-starved technique or a capacitor-based delay unit, which is non-linear, expensive, and requires a large area. In this paper, we propose a highly linear current-to-digital converter. An optimization method is also proposed to generate the optimal converter design containing the smallest number of PMOS and sensitive circuits such as a differential amplifier. This enabled our design t

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Cardarilli, Gian Carlo, Luca Di Nunzio, Rocco Fazzolari та ін. "Efﬁcient FPGA implementation of high speed digital delay for wideband beamforming using parallel architectures". Bulletin of Electrical Engineering and Informatics 8, № 2 (2019): 422–27. http://dx.doi.org/10.11591/eei.v8i2.1483.

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In this paper, the authors present an FPGA implementation of a digital delay for beamforming applications. The digital delay is based on a Parallel Farrow Filter. Such architecture allows to reach a very high processing rate with wideband signals and it is suitable to be used with Time-Interleaved Analog to Digital Converters (TI-ADC). The proposed delay has been simulated in MATLAB, implemented on FPGA and characterized in terms of amplitude and phase response, maximum clock frequency and area.

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Yin, Y., H. Klar, and P. Wennekers. "A 8X Oversampling Ratio, 14bit, 5-MSamples/s Cascade 3-1 Sigma-delta Modulator." Advances in Radio Science 3 (May 12, 2005): 277–80. http://dx.doi.org/10.5194/ars-3-277-2005.

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Abstract. A 14-b, 5-MHz output-rate cascaded 3-1 sigma-delta analog-to-digital converters (ADC) has been developed for broadband communication applications, and a novel 4th-order noise-shaping is obtained by using the proposed architecture. At a low oversampling ratio (OSR) of 8, the ADC achieves 91.5dB signal-to-quantization ratio (SQNR), in contrast to 71.8dB of traditional 2-1-1 cascaded sigma-delta ADC in 2.5-MHz bandwidth and over 80dB signal-to-noise and distortion (SINAD) even under assumptions of awful circuit non-idealities and opamp non-linearity. The proposed architecture can potent

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Kumar, Manoj, and Raj Kumar. "A Ultra Low Power 12 Bit Successive Approximation Register for Bio-Medical Applications." International Journal of Engineering & Technology 7, no. 3.16 (2018): 98. http://dx.doi.org/10.14419/ijet.v7i3.4.16192.

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Successive Approximation Register (SAR) analog to digital Converters (ADC) is favorable choice for the high resolution. As resolution of ADC increases, the no. of redundant cycles increases which increases power. So the Paper presents clock gated ADC with no redundant cycles/transition cycles for low power requirement and comparison between without Clock Gating and Clock Gated SAR. Using Simulation, Power consumption for Clock gated SAR 736.1nW at 1.8V power supply where as without Clock Gating SAR consumption is 54µW at 1.8 power supply.

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Mfana, Hasan, and Ali. "Odd/Even Order Sampling Soft-Core Architecture towards Mixed Signals Fourth Industrial Revolution (4IR) Applications." Energies 12, no. 23 (2019): 4567. http://dx.doi.org/10.3390/en12234567.

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Digitization is at the center of fourth industrial revolution (4IR) with previously analog systems being digitized through an analog-to-digital converter. In addition, 4IR applications such as fifth generation (5G) Cellular Networks Technology and Cognitive Electronic Warfare (EW) at some point interface digitally through an analog-to-digital converter. Efficient use of digital resources such as memory, largely depends on the signal sampling design of analog-to-digital converters. Existing even order sampling has been found to perform better than traditional sampling techniques. Research on th

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Murthy Dumpala, Ramana, and . "Technique to Improve SNR for Sigma Delta Adcs for Audio Signals." International Journal of Engineering & Technology 7, no. 3.6 (2018): 91. http://dx.doi.org/10.14419/ijet.v7i3.6.14946.

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A RISR architecture for Sigma-delta analog to digital converters with modified noise transfer function to obtain a better performance in terms of SNR is proposed. Cascading of two modified second order modulators are done to achieve 4th order modulator. Behavioral simulations are done to study the performance of feed-forward and the modified cascaded architecture. They are designed to operate at 1.28MHz clock frequency for audio applications (OSR of 32). It is noted that SNR of 115dB is achieved by cascading of two Modified second order RISR architectures which is 8dB more than the normal RISR

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Heydenreich, Markus, Remco van der Hofstad, and Georgi Radulov. "FUNCTIONALS OF BROWNIAN BRIDGES ARISING IN THE CURRENT MISMATCH IN D/A CONVERTERS." Probability in the Engineering and Informational Sciences 23, no. 1 (2008): 149–72. http://dx.doi.org/10.1017/s0269964809000114.

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Digital-to-analog converters (DAC) transform signals from the abstract digital domain to the real analog world. In many applications, DACs play a crucial role. Due to variability in the production, various errors arise that influence the performance of the DAC. We focus on the current errors, which describe the fluctuations in the currents of the various unit current elements in the DAC. A key performance measure of the DAC is the Integrated Nonlinearity (INL), which we study in this article. There are several DAC architectures. The most widely used architectures are the thermometer and the bi

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Price, R. L. "Practical considerations and applications of digital imaging in a core microscopy facility." Proceedings, annual meeting, Electron Microscopy Society of America 54 (August 11, 1996): 606–7. http://dx.doi.org/10.1017/s0424820100165495.

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The Integrated Microscopic Analysis Facility (IMAF) at the University of South Carolina School of Medicine is a core research and imaging facility that provides service for the faculty, staff and students of the medical school and associated hospitals. The IMAF currently houses one scanning and two transmission electron microscopes, a confocal scanning laser microscope, and several image processing computers and programs. While not yet totally converted to digital technology, we have been successful in introducing digital imaging to several areas of our imaging capabilities during the last few

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Allén, Markus, Jaakko Marttila, and Mikko Valkama. "Modeling and mitigation of nonlinear distortion in wideband A/D converters for cognitive radio receivers." International Journal of Microwave and Wireless Technologies 2, no. 2 (2010): 183–92. http://dx.doi.org/10.1017/s1759078710000292.

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This article discusses the reduction of nonlinearities in analog-to-digital (A/D) converters using digital signal processing (DSP). Also modeling of certain essential nonlinearities is considered in detail. The main focus is on wideband radio receivers, such as the emerging cognitive radio applications, where a collection of signals at different frequency channels is converted to digital domain as a whole. Therefore, the overall dynamic range can easily be in the order of tens of dBs and thus even mild nonlinear distortion can cause strong carriers to block weaker signal bands. In this article

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Wang, Hui, Zhengshi Liu, Bin Zhu, and Quanjun Song. "Multiple Harmonics Fitting Algorithms Applied to Periodic Signals Based on Hilbert-Huang Transform." Journal of Sensors 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/580152.

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A new generation of multipurpose measurement equipment is transforming the role of computers in instrumentation. The new features involve mixed devices, such as kinds of sensors, analog-to-digital and digital-to-analog converters, and digital signal processing techniques, that are able to substitute typical discrete instruments like multimeters and analyzers. Signal-processing applications frequently use least-squares (LS) sine-fitting algorithms. Periodic signals may be interpreted as a sum of sine waves with multiple frequencies: the Fourier series. This paper describes a new sine fitting al

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Lin, Chih-Hsuan, and Kuei-Ann Wen. "An Innovative Successive Approximation Register Analog-to-Digital Converter for a Nine-Axis Sensing System." Journal of Low Power Electronics and Applications 11, no. 1 (2021): 3. http://dx.doi.org/10.3390/jlpea11010003.

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With nine-axis sensing systems in 5G smartphones, mobile power consumption has become increasingly important, and ultra-low-power (ULP) sensor circuits can decrease power consumption to tens of microwatts. This paper presents an innovative successive approximation register analog-to-digital converter, which comprises fine (three most significant bits (MSBs) plus course conversion (11 least significant bits (LSBs)) capacitive digital-to-analog converters (CDACs), ULP, four-mode reconfigurable resolution (9, 10, 11, or 12 bits), an internally generated clock, meta-detection, the switching base m

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Lin, Chih-Hsuan, and Kuei-Ann Wen. "An Innovative Successive Approximation Register Analog-to-Digital Converter for a Nine-Axis Sensing System." Journal of Low Power Electronics and Applications 11, no. 1 (2021): 3. http://dx.doi.org/10.3390/jlpea11010003.

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With nine-axis sensing systems in 5G smartphones, mobile power consumption has become increasingly important, and ultra-low-power (ULP) sensor circuits can decrease power consumption to tens of microwatts. This paper presents an innovative successive approximation register analog-to-digital converter, which comprises fine (three most significant bits (MSBs) plus course conversion (11 least significant bits (LSBs)) capacitive digital-to-analog converters (CDACs), ULP, four-mode reconfigurable resolution (9, 10, 11, or 12 bits), an internally generated clock, meta-detection, the switching base m

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Cheng, Zeng, M. Jamal Deen, and Hao Peng. "A Low-Power Gateable Vernier Ring Oscillator Time-to-Digital Converter for Biomedical Imaging Applications." IEEE Transactions on Biomedical Circuits and Systems 10, no. 2 (2016): 445–54. http://dx.doi.org/10.1109/tbcas.2015.2434957.

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Zuo, Xiao Qiong, and Ya Xian Liu. "Precise Time Measurement Using CTMU." Applied Mechanics and Materials 214 (November 2012): 232–36. http://dx.doi.org/10.4028/www.scientific.net/amm.214.232.

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Numerous applications require very precise time measurement. Usually, the measurement accuracy is increased by improve the MCU MIPS. It will take the high cost and current consumption, and the accuracy is limited in the MCU MIPS. Using CTMU channels work in conjunction with Analog to Digital converters, the high precise time measurement with low cost MCU can be achieved, and make the time measurement resolution to 1 nanosecond. CTMU module is available in many Microchip microcontrollers.

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