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An integrated linear-transconductance analog multiplierFree, Maurice George, 1942- January 1970 (has links)
No description available.
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Two new triangle-integration multipliersHartmann, John P., 1935- January 1960 (has links)
No description available.
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A fast quarter-square multiplierWhigham, Robert Herschel, 1939- January 1965 (has links)
No description available.
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Auflösungserhöhung von sehr schnellen A-D- und D-A-UmsetzernBittel, Andreas. January 1900 (has links) (PDF)
Stuttgart, Univ., Diss., 2004. / Computerdatei im Fernzugriff.
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Auflösungserhöhung von sehr schnellen A-D- und D-A-UmsetzernBittel, Andreas. January 1900 (has links) (PDF)
Stuttgart, Universiẗat, Diss., 2004.
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An alternative approach to the performance enhancements of second order sigma-delta modulator A/D convertorsCheshmehdoost, Reza January 1996 (has links)
No description available.
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Dator och Powerpoint eller penna och whiteboard. : En studie om digitala och analoga verktyg i undervisning.Elofsson, Ann January 2017 (has links)
During the spring of 2016 the Swedish government presented a national IT-strategy involving personal computers for each student from grade 1-9. Meanwhile current studies are indicating the importance of handwriting for learning and remembering new skills. However, according to several cognitive scientists, the results from meta studies regarding analogue and digital tools and their contribution to learning processes are contradictory. A survey and a cross sectional study was therefore conducted aiming to compare analogue versus digital note taking and teaching methods. A total of 85 7:th grade students filled out a survey concerning their preferences in note taking and teaching methods. Non-parametric sign-test statistically proved the students in the study preferred typing over writing by hand when taking notes in class (p =0.008). Reasons for their preference included a general positive attitude towards using computers and students acknowledging the benefits of spelling programs. Furthermore, the students in the survey preferred their teacher using whiteboard instead of Powerpoint when lecturing (p=0.012). The students claimed to comprehend the content given in lectures more efficiently when whiteboard was utilized. The cross sectional study was performed in the purpose of comparing two note taking methods: writing by hand and typing. Two 7:th grade classes (N=39) participated in the study and a total of six theme lessons in ecology were conducted. The students’ individual performances were evaluated with exit tickets involving questions of facts and concepts. The differences between the classes’ performances were only marginal according to Mann-Whitney non-parametric analysis. Based on the results of this study, further implementation of computers in classrooms should be conducted methodically with care.
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Area efficient D/A converters for accurate DC operationGreenley, Brandon Royce 31 May 2001 (has links)
The design of mixed-signal integrated circuits has evolved from simple analog and
digital circuits operating on the same silicon substrate to the point that now we
have complete system on a chip solutions for communication systems. The levels of
integration needed to remain cost effective in today's integrated circuit (IC) market
require careful use of all the available die space. The current trend of digital to
analog converter (DAC) design has focused on maximizing speed and linearity for
high performance telecommunications systems. The circuit design methods used to
achieve very high sample rates require the use of large amounts of die space.
This thesis presents a 10-bit DAC that has been optimized for area, while still
maintaining accurate operation at low frequencies. To achieve 10-bit performance,
an ultra high gain op-amp is introduced for various servoing applications in the
DAC. The architecture chosen for the DAC will show an optimization of required
die size and performance when compared to other architectures. The DAC was
fabricated in a standard digital 0.18 μm CMOS process. The DAC occupies 0.0104
mm² (110 μm x 94 μm), and only consumes 2.8 mW of power. In addition to the
10-bit DAC, a design is presented for a 13-bit DAC which occupies 0.020 mm², and
requires only the addition of a minimum number of devices to the 10-bit DAC. / Graduation date: 2002
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Digital implementation of a mismatch-shaping successive-approximation ADCCoe, Matthew T. 15 October 2001 (has links)
Utilizing a two-capacitor topology, the digital implementation of an audio-band
successive-approximation analog-to-digital converter (ADC) is explored in the
context of mismatch-shaping where the mismatch estimates are accurate to the first
order. A second-order ����� loop was found to be effective in system simulations
given a 0.1% capacitor mismatch. Spectral analysis of the ADC shows dramatic
improvements in total harmonic distortion as well as 87 dB SNDR (signal to noise
and distortion ratio) for an oversampling ratio of 10. / Graduation date: 2002
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20-stage pipelined ADC with radix-based calibrationYun, Chong Kyu 07 November 2002 (has links)
A radix-based calibration technique was previously proposed with a two-stage
algorithmic analog-to-digital converter (ADC). The objective of this work is to verify
the capability of radix-based calibration for a true multi-stage ADC. In order to prove
the idea, a single bit-per-stage, 20-stage pipelined ADC is designed in a 0.35-��m
CMOS technology. The system is fully differential and requires two non-overlapping
clock phases to operate. The implementation of the calibration technique in the
pipelined ADC is investigated. Simulation results show that 109dB of SNDR,
112dB of THD, and 116dB of SFDR can be achieved, which indicates the overall
accuracy of the ADC is 18 bits. / Graduation date: 2003
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