Abstract
This letter presents novel energy-efficient switching schemes for a successive approximation register analog-to-digital converter. The new switch method consumes no switching energy in the first three comparison cycles. The average switching energy is reduced by 99.21 and 99.37 % for the signal-independent and signal-dependent common mode voltage at the comparator, respectively. A 75 % reduction in the total capacitance over the conventional scheme is also achieved. The variation of the common mode voltage at the comparator input in the proposed architecture is 50 % less than in other low power switching schemes.
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Acknowledgments
This work was supported by the Creative Unit I-See, University of Bremen (Exzellenzinitiative des Bundes und der Länder).
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Osipov, D., Paul, S. Two advanced energy-back SAR ADC architectures with 99.21 and 99.37 % reduction in switching energy. Analog Integr Circ Sig Process 87, 81–91 (2016). https://doi.org/10.1007/s10470-016-0707-3
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DOI: https://doi.org/10.1007/s10470-016-0707-3