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Paper Abstract and Keywords
Presentation 2024-02-28 10:30
A Low Power Multi Bit Passive ΔΣ Modulator for Wearable Devices
Naoya Maruyama, Satoshi Komatsu (Tokyo Denki Univ.) DC2023-94
Abstract (in Japanese) (See Japanese page) 
(in English) We present a low-power multi-bit passive ΔΣ modulator for wearable devices. Though delta-sigma modulators that use passive filters can achieve low-power operation, the lower gain of the filters in those modulators causes lower resolution. Some techniques that exploit the combination of passive and active filters and low-gain circuits have been proposed to improve the resolution, which causes significant power dissipation.
In this study, we propose a modulator that is composed of a passive filter and a 2-bit Flash ADC with a low-power comparator to overcome the above issues. We implemented the proposed modulator in a 0.18 μ CMOS technology, which has a bandwidth of 10 kHz for a clock frequency of 1.28MHz. The circuit simulation results show that the proposed circuit achieves a maximum SNDR of 54 dB and a dynamic range of 62 dB with 1.75 μW power dissipation.
Keyword (in Japanese) (See Japanese page) 
(in English) ΔΣ Modulator / Low Power / Wearable Devices / / / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 389, DC2023-94, pp. 1-6, Feb. 2024.
Paper # DC2023-94 
Date of Issue 2024-02-21 (DC) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF DC2023-94

Conference Information
Committee DC  
Conference Date 2024-02-28 - 2024-02-28 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To DC 
Conference Code 2024-02-DC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Low Power Multi Bit Passive ΔΣ Modulator for Wearable Devices 
Sub Title (in English)  
Keyword(1) ΔΣ Modulator  
Keyword(2) Low Power  
Keyword(3) Wearable Devices  
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1st Author's Name Naoya Maruyama  
1st Author's Affiliation Tokyo Denki University (Tokyo Denki Univ.)
2nd Author's Name Satoshi Komatsu  
2nd Author's Affiliation Tokyo Denki University (Tokyo Denki Univ.)
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Speaker Author-1 
Date Time 2024-02-28 10:30:00 
Presentation Time 25 minutes 
Registration for DC 
Paper # DC2023-94 
Volume (vol) vol.123 
Number (no) no.389 
Page pp.1-6 
#Pages 6 
Date of Issue 2024-02-21 (DC) 

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