IEEE Midwest Symposium on Circuits and Systems , 2016-10-16

Title : ( A Fully-Synchronous Offset-Insensitive Level-Crossing Analog-to-Digital Converter )

Authors: Nassim Ravanshad , Hamidreza Rezaee-Dehsorkh , Reza Lotfi ,

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Abstract

A fully-synchronous offset-insensitive structure is proposed for implementing level-crossing analog-to-digital converters (LC-ADCs). The proposed structure is designed and implemented for high-precision compressed electrocardiogram (ECG) monitoring applications. Synchronous implementation leads to less implementation complexity compared to the conventional asynchronous implementations. Also the major source of error, viz. the difference in comparators offsets is eliminated which additionally leads to considerable saving in silicon area. Designing and simulating in a 0.18 μm CMOS technology, the LC-ADC achieves an ENOB of 8.45 bits and occupies 0.038 mm2 silicon area. The average sampling rate is about 120 S/s when applied to the whole MIT/BIH arrhythmia database. Simulation results show a power consumption of 81 nW with a 1.8 V supply voltage, by testing the ADC using Tape 100 of the MIT/BIH arrhythmia database.

Keywords

, Level-crossing ADC, fully synchronous
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@inproceedings{paperid:1060751,
author = {Nassim Ravanshad and Hamidreza Rezaee-Dehsorkh and Lotfi, Reza},
title = {A Fully-Synchronous Offset-Insensitive Level-Crossing Analog-to-Digital Converter},
booktitle = {IEEE Midwest Symposium on Circuits and Systems},
year = {2016},
location = {Abu Dhabi},
keywords = {Level-crossing ADC; fully synchronous},
}

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%0 Conference Proceedings
%T A Fully-Synchronous Offset-Insensitive Level-Crossing Analog-to-Digital Converter
%A Nassim Ravanshad
%A Hamidreza Rezaee-Dehsorkh
%A Lotfi, Reza
%J IEEE Midwest Symposium on Circuits and Systems
%D 2016

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