نتایج جستجو برای: digital to analog conversion
تعداد نتایج: 10722884 فیلتر نتایج به سال:
A lthough real world signals are analog, it is often desirable to convert them into the digital domain .using an analog to digital converter (ADC). Motivating designers to apply this conversion is the efficient transmission and storage of digital signals. Digital representation of an audio signal, for example, allows CD players to achieve virtually error free storage using optical disks [l]. In...
Some common analog-to-digital conversion techniques, and ben-etits derived trom dual slope as used in the new digital instrument. Drcrrar voLTMETERS DTFFER BASTcALLy from the commonly used analog voltmeters in one respect-their display or readout is a numeric display rather than a meter indication. Analog voltmeters seldom have accuracies greater than about 0.25%, and to achieve even these accu...
We consider the problem of mapping digital data encoded on a quantum register to analog amplitudes in parallel. It is shown to be unlikely that a fully unitary polynomial-time quantum algorithm exists for this problem; NP becomes a subset of BQP if it exists. In the practical point of view, we propose a nonunitary linear-time algorithm using quantum decoherence. It tacitly uses an exponentially...
An efficient means for constructing a narrow bandpass filter for an analogto-digital converter based on a bandpass sigma-delta modulator is presented. It is shown that the filter can be made with very simple hardware, comparable to that required by an analog-to-digital converter using standard lowpass sigma-delta modulation. Introduction Bandpass sigma-delta modulation [1] is a variant of the m...
This thesis project examines the design of a monolithic audio-band digital-to-analog (D/A) converter with the objective of achieving a high signal-to-noise ratio, low analog die area consumption, and low static power dissipation. Issues relating to system design, digital signal processing, sigma-delta modulation, D/A topology selection, and switched-capacitor filter design are covered. The Dire...
Due to the expected increase of defects in circuits based on deep submicron technologies, reliability has become an important design criterion. Although different approaches have been developed to estimate reliability in digital circuits and some measuring concepts have been separately presented to reveal the quality of analog circuit reliability in the literature, there is a gap to estimate re...
In this paper we investigate SET devices from the logic design perspective, using the SET tunnel junction’s ability to control the transport of individual electrons. We introduce a modified turnstile circuit with clock and enable control signals, which has built-in memory and reset functionality. Using the modified turnstile circuit as a building block, we propose a scheme for an n-input digita...
Sampling rates of high-performance electronic analog-to-digital converters (ADC) are fundamentally limited by the timing jitter of the electronic clock. This limit is overcome in photonic ADC’s by taking advantage of the ultra-low timing jitter of femtosecond lasers. We have developed designs and strategies for a photonic ADC that is capable of 40 GSa/s at a resolution of 8 bits. This system re...
Multi-stage analog-to-digital converters are the dominant choice in applications that require both high speed and high accuracy, such as video and wideband radio [1]. Non-idealities such as static device mismatch and dynamic timing mismatch, in different architectures of multi-steps analog to digital converter affect the redundancy and performance at the output of an instrument. Redundant sign ...
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