Print Email Facebook Twitter A Charge-Redistribution Phase-Domain ADC Using an IQ-Assisted Binary-Search Algorithm Title A Charge-Redistribution Phase-Domain ADC Using an IQ-Assisted Binary-Search Algorithm Author Rajabi, Leila (Ferdowsi University of Mashhad) Saberi, Mehdi (Ferdowsi University of Mashhad) Liu, Y. (TU Delft Bio-Electronics) Lotfi, R. (TU Delft Bio-Electronics; Ferdowsi University of Mashhad) Serdijn, W.A. (TU Delft Bio-Electronics) Date 2017 Abstract Phase-domain Analog-to-Digital Converters (Ph-ADCs) have been considered for power-efficient implementation of body-area network transceivers employing phase demodulation. Conventional implementations of the Ph-ADCs, which work based on a full-flash zero-crossing algorithm, use linear resistive/current combiners to determine the thermometer digital code of the signal phase. These architectures suffer from high-accuracy requirements, high-circuit complexity, and high-power consumption. Therefore, in this paper, a new IQ-assisted binary-search algorithm is proposed for implementing the Ph-ADC. The proposed Ph-ADC architecture avoids employing the power-hungry linear combiner. Moreover, for an N-bit Ph-ADC, the proposed algorithm requires only N +1 comparisons, whereas the conventional full-flash counterpart demands 2N-1 comparisons. Based on the proposed architecture, two different 5-bit charge-redistribution Ph-ADC s are designed and one of them is fabricated in a standard 0.18-μm CMOS technology. The prototype achieves an ENOB of 4.85 bits at 1 MS/s, while dissipating 12.9 μW from a 1.2-V supply. Subject Phase-domain analog-to-digital converterIQ-assisted binary searchcharge-redistribution Ph-ADC To reference this document use: http://resolver.tudelft.nl/uuid:1851f049-2289-4c28-b1c5-3373eb130481 DOI https://doi.org/10.1109/TCSI.2017.2681461 ISSN 1549-8328 Source IEEE Transactions on Circuits and Systems Part 1: Regular Papers, 64 (7), 1696-1705 Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type journal article Rights © 2017 Leila Rajabi, Mehdi Saberi, Y. Liu, R. Lotfi, W.A. Serdijn Files PDF 37302306_tcas1_2017_rajab ... erdijn.pdf 2.65 MB Close viewer /islandora/object/uuid:1851f049-2289-4c28-b1c5-3373eb130481/datastream/OBJ/view