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IEICE TRANSACTIONS on Fundamentals

Analysis of the Clock Jitter Effects in a Time Invariant Model of Continuous Time Delta Sigma Modulators

Hossein SHAMSI, Omid SHOAEI, Roghayeh DOOST

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Summary :

In this paper by using an exactly analytic approach the clock jitter in the feedback path of the continuous time Delta Sigma modulators (CT DSM) is modeled as an additive jitter noise, providing a time invariant model for a jittery CT DSM. Then for various DAC waveforms the power spectral density (psd) of the clock jitter at the output of DAC is derived and by using an approximation the in-band power of the clock jitter at the output of the modulator is extracted. The simplicity and generality of the proposed approach are the main advantages of this paper. The MATALB and HSPICE simulation results confirm the validity of the proposed formulas.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E89-A No.2 pp.399-407
Publication Date
2006/02/01
Publicized
Online ISSN
1745-1337
DOI
10.1093/ietfec/e89-a.2.399
Type of Manuscript
Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
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