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Analysis of the non-uniform samplings in sigma-delta modul ated signals

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Authors
Lee, Eelwan; Chae, Soo-Ik
Issue Date
1998-05
Publisher
IEEE
Citation
ISCAS '97
Abstract
The effects of non-uniform sampling in the EA-modulated DAC are
discussed in this paper. The non-uniform sampling of the EA-modulated signals
causes in-hand noise in the DAC, which will be compared with the harmonic distortions
in switched capacitor circuit and the that due to the signal-dependent nonlinearity
in the 1-hit DAC. We describe an error-driven edgeselection ulgorithm that
suppresses the in-band noise and its implementation. We also propose a model of
the in-band noise caused by the non-uniform sampling, which predicts tlhe noise
reduction of the spectral shaping in the frequency domain quantitatively based
upon the transition probability of the modulator output.
Language
English
URI
https://hdl.handle.net/10371/62270
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Electrical and Computer Engineering (전기·정보공학부)Others_전기·정보공학부
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