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Jitter-Induced Noise Spectrum at the Output of Continuous-Time ΔΣ Modulators with NRZ Feedback Waveform
IEICE TRANSACTIONS on Electronics
Publication Date: 2009/11/01
Online ISSN: 1745-1353
Print ISSN: 0916-8516
Type of Manuscript: BRIEF PAPER
Category: Electronic Circuits
delta-sigma modulator, continuous-time, NRZ waveform, jitter, linear system theory,
Full Text: PDF(306KB)>>
This paper proposes a closed-form formula for the jitter-induced noise spectrum at the output of continuous-time ΔΣ modulators with NRZ feedback waveform. In this approach, the clock jitter effects are modeled as an additive noise in the feedback loop of the modulator. Making use of a conceptual model and following from the linear system theory, the output spectrum is explained versus the spectrum of the additive jitter noise.