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Título : Analysis of Clock Jitter Error in Multibit Continuous-Time ΣΔ modulators with NRZ Feedback Waveform
Autor : Tortosa, Ramón ; Rosa, José M. de la ; Rodríguez-Vázquez, Ángel ; Fernández, Francisco V.
Palabras clave : Continuous-Time Sigma-Delta
Clock Jitter
Fecha de publicación : may-2005
Editor: Institute of Electrical and Electronics Engineers
Citación : R. Tortosa-Navas, J. M. de la Rosa, A. Rodríguez-Vázquez and F.V. Fernández: "Analysis of Clock Jitter Error in Multibit Continuous-Time ΣΔ Modulators with NRZ Feedback Waveform”, Proceeding of the 2005 International Symposium on Circuits and Systems (ISCAS), pp. 3103-3106, Kobe, Japan, May 2005.
Resumen: This paper presents a detailed study of the clock jitter error in multibit continuous-time ΣΔ modulators with non-return-to-zero feedback waveform. Closed-form expressions are derived for the in-band error power and the signal-to-noise ratio showing that the jitter-induced noise can be separated into two main components: one depending on the modulator loop filter and the other one due to the input signal. The latter, not considered in previous approaches, allows us to accurately predict the signal-to-noise ratio degradation and to optimize the modulator performance in terms of jitter insensitivity. Moreover, the use of state-space formulation makes the analysis quite general and applicable to either cascaded or single-loop architectures. Time-domain simulations of several modulators are shown to validate the presented approach.
URI : http://hdl.handle.net/10261/3823
Referencias: 0-7803-8834-8/05/
Aparece en las colecciones: (IMS-CNM) Comunicaciones congresos
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