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Mathematical model of glitches in DAC with weight redundancy
Author(s): Oleksyi D. Azarov; Oleksandr G. Murashenko; Semen S. Katsiv; Konrad Gromaszek; Gali Duskazaev; Olga Ussatova
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Paper Abstract

Glitches appear in digital-to-analog converters and lead to significant limitations of conversion accuracy and speed, which is critical for DAC and limits their usage, especially in the direct digital synthesis systems. This paper researches the causes, the specificity of the appearance of glitches in DAC and the possibility of using weight redundancy in order to reduce glitches in DAC. There had been suggested and analyzed the mathematical model of glitches in DAC with weight redundancy. There had also been proved that glitch amplitude is significantly influenced by the value of the voltage control of the DAC and the parasitic capacities of the digital keys. There had been shown that the attenuation time (duration) of the glitch is significantly influenced by the value of load resistance. The paper shows the expediency of using the DAC based on redundant positional number systems including Fibonacci p-codes. The simulation results prove that with the increase of the parameter p, the characteristics of glitch are significantly improved in comparison with the classical binary system, namely the amplitude and the attenuation time of glitch decrease.

Paper Details

Date Published: 15 March 2019
PDF: 12 pages
Proc. SPIE 11045, Optical Fibers and Their Applications 2018, 1104511 (15 March 2019); doi: 10.1117/12.2522403
Show Author Affiliations
Oleksyi D. Azarov, Vinnytsia National Technical Univ. (Ukraine)
Oleksandr G. Murashenko, Vinnytsia National Technical Univ. (Ukraine)
Semen S. Katsiv, Vinnytsia National Technical Univ. (Ukraine)
Konrad Gromaszek, Lublin Univ. of Technology (Poland)
Gali Duskazaev, Kazakhstan Engineering Technological Univ. (Kazakhstan)
Olga Ussatova, Al-Farabi Kazakh National Univ. (Kazakhstan)


Published in SPIE Proceedings Vol. 11045:
Optical Fibers and Their Applications 2018
Ryszard S. Romaniuk; Waldemar Wójcik; Andrzej Smolarz, Editor(s)

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