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Experimental Characterization of IdleTones in Second-Order Bandpass ΣΔ Modulators

AuthorsRosa, José M. de la ; Pérez-Verdú, Belén ; Medeiro, Fernando ; Río, Rocío del; Rodríguez-Vázquez, Ángel
KeywordsBandPass Sigma-Delta Converters
Idle tones
Issue DateNov-2000
CitationJ.M. de la Rosa, B. Pérez-Verdú, F. Medeiro, R. del Río and A. Rodríguez-Vázquez, “Experimental Characterization of Idle Tones in Second-Order BandPass Sigma-Delta Modulators”. Proc. of the XV Design of Circuits and Integrated Systems Conference, pp. 150-155, Montpellier (France), November 2000.
AbstractThis paper analyses the tonal behaviour of the quantization noise in second-order bandpass ΣΔ modulators. The analysis performed for lowpass modulators is extended to the bandpass case. As a result, closed form expressions for the frequency of idle tones are derived for different cases regarding the signal center frequency position. All these results have been validated by measurements from a silicon prototype using fully differential switched-current circuits implemented in a standard 0.8μm CMOS technology.
Appears in Collections:(IMSE-CNM) Comunicaciones congresos
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