000153561 001__ 153561
000153561 005__ 20181203022040.0
000153561 0247_ $$2doi$$a10.1109/TCSI.2008.916531
000153561 02470 $$2ISI$$a000256258400005
000153561 02470 $$a2-s2.0-44949094677$$2Scopus
000153561 037__ $$aARTICLE
000153561 245__ $$aReducing the number of comparators in multi-bit ΔΣ modulators
000153561 269__ $$a2008
000153561 260__ $$c2008
000153561 336__ $$aJournal Articles
000153561 500__ $$aMarvell Switzerland Srl, CH-1163 Etoy, Switzerland Electronics Laboratory (LEG), Swiss Federal Institute of Technology (EPFL), CH-1015 Lausanne, Switzerland
000153561 500__ $$aCited By (since 1996): 1
000153561 500__ $$aExport Date: 19 January 2010
000153561 500__ $$aSource: Scopus
000153561 500__ $$aReferences: Geerts, Y., Steyaert, M., Sansen, W., (2002) Design of multi-bit Delta-Sigma A/D converters, , Boston: Kluwer Academic Publishers; Fishov, A., Siracusa, E., Welz, J., Fogleman, E., Galton, I., Segmented mismatch-shaping D/A conversion (2002) Proc. of the IEEE Intl. Sym. on Circuits and Sys, 4, pp. 679-682. , may; Lu, X., A novel signal-predicting multibit delta-sigma modulator (2004) Proc. of the IEEE Intl. Conf. on Electronics, Circuits and Sys, pp. 105-108. , dec; L. Dorrer, F. Kuttner, P. Greco, P. Torta, and T. Hartig, A 3-mW 74-dB SNR 2-MHz continuous-time Delta-Sigma ADC with a tracking ADC quantizer in 0.13-um CMOS, 40, pp. 2416-2426, December 2005Zierhofer, C.M., Adaptive Sigma-Delta modulation with one-bit quantization (2000) IEEE Trans. on circuits and sys. II, pp. 408-415. , may; Norsworthy, S.R., Schreier, R., Temes, G.C., (1997) Delta-Sigma Data Converters: Theory, Design, and Simulation, , New-York: IEEE; Mason, S.J., Zimmermann, H.J., (1960) Electronic circuits, signals, and systems, , New-York: John Wiley; Maeyer, J.D., Rombouts, P., Weyten, L., Efficient multibit quantization in continous-time Δ∑ modulators (2007) IEEE Trans. on circuits and sys. I, pp. 757-767. , april; Pesenti, S., Hybrid continuous-discrete-time multi-bit Delta-Sigma A/D converters with auto-ranging algorithm, (2008), Ph.D. dissertation, Ecole Polytechnique Fédérale de Lausanne, Lausanne, No 3912Pesenti, S., Clement, P., Stefanovic, D., Kayal, M., A low-power strategy for Delta-Sigma modulators (2007) Proc. of the Intl. Conf. on Mixed Design of Integrated Circuits and Sys., MIXDES, pp. 203-208. , june; Razavi, B., (2001) Design of Analog CMOS Integrated Circuits, , New-York: Mc Graw Hill International Edition; Johns, D.A., Martin, K., (1997) Analog Integrated Circuit Design, , New-York: John Wiley & Sons Inc; Pastre, M., Kayal, M., (2006) Methodology for the digital calibration of analog circuits and systems with case studies, , Berlin: Springer; Kostrikin, A.I., (1982) Introduction to Algegra, , Berlin: Springer
000153561 520__ $$aMulti-bit feedback, being one way of lowering ΔΣ modulators power consumption, has a major obstacle: the number of components in the internal analog-to-digital converter (ADC) and digital-to-analog converter (DAC). Nevertheless, the number of comparators in the ADC can be significantly reduced depending on the order of noise-shaping and the oversampling ratio. In this paper, we propose an auto-ranging algorithm with a mechanism to keep the structure stable that emulates more quantization levels than that allowed by the number of comparators. As the recourse to segmented DACs allows lowering the complexity of the mismatch shaping encoder, the auto-ranging ADC brings the benefits of multibit feedback without the usual increase in size and power consumption. The internal number of bits in Δ Σ modulators is no more restricted by the difficulty of building the flash ADC with a low voltage supply. © 2008 IEEE.
000153561 6531_ $$aAdaptive algorithm
000153561 6531_ $$aAuto-ranging
000153561 6531_ $$aDelta-sigma ΔΣ
000153561 6531_ $$aDynamic element matching (DEM)
000153561 6531_ $$aLow voltage
000153561 6531_ $$aMulti-bit
000153561 700__ $$aPesenti, S.
000153561 700__ $$aClément, P.
000153561 700__ $$g105540$$aKayal, M.$$0240539
000153561 773__ $$j55$$tIEEE Transactions on Circuits and Systems I: Regular Papers$$k4$$q1011-1022
000153561 909C0 $$xU11978$$0252315$$pELAB
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000153561 937__ $$aEPFL-ARTICLE-153561
000153561 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000153561 980__ $$aARTICLE