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Paper Abstract and Keywords
Presentation 2021-03-03 14:30
Measurement of Voltage-variation-tolerant Temperature Sensor for Standard CMOS Chip with On-chip Solar Cell
Shuto Murohara, Tatsuya Banno, Tomoya Kimura, Takashi Imagawa, Hiroyuki Ochi (Ritsumeikan Univ.) VLD2020-74 HWS2020-49
Abstract (in Japanese) (See Japanese page) 
(in English) Aiming at realizing a CMOS-process-compatible external-component-free SoC with an on-chip solar cell and a temperature sensor, this report proposes a temperature sensor that operates at about 0.5V supply voltage and presents its simulation and measurement results. The proposed temperature sensor estimates the temperature based on the ratio of the frequency variations of two oscillators, a reference ring oscillator, whose frequency varies linearly to temperature, and a temperature ring oscillator, whose frequency varies exponentially to temperature. Results of circuit simulations and actual measurements suggest that temperature estimation is possible.
Keyword (in Japanese) (See Japanese page) 
(in English) micro-energy harvesting / sensor device / ring oscillator / low-power low-supply-voltage circuit design / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 400, VLD2020-74, pp. 32-37, March 2021.
Paper # VLD2020-74 
Date of Issue 2021-02-24 (VLD, HWS) 
ISSN Online edition: ISSN 2432-6380
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 VLD2020-74 HWS2020-49

Conference Information
Committee HWS VLD  
Conference Date 2021-03-03 - 2021-03-04 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Design Technology for System-on-Silicon, Hardware Security, etc. 
Paper Information
Registration To VLD 
Conference Code 2021-03-HWS-VLD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Measurement of Voltage-variation-tolerant Temperature Sensor for Standard CMOS Chip with On-chip Solar Cell 
Sub Title (in English)  
Keyword(1) micro-energy harvesting  
Keyword(2) sensor device  
Keyword(3) ring oscillator  
Keyword(4) low-power low-supply-voltage circuit design  
1st Author's Name Shuto Murohara  
1st Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
2nd Author's Name Tatsuya Banno  
2nd Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
3rd Author's Name Tomoya Kimura  
3rd Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
4th Author's Name Takashi Imagawa  
4th Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
5th Author's Name Hiroyuki Ochi  
5th Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
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Speaker Author-1 
Date Time 2021-03-03 14:30:00 
Presentation Time 25 minutes 
Registration for VLD 
Paper # VLD2020-74, HWS2020-49 
Volume (vol) vol.120 
Number (no) no.400(VLD), no.401(HWS) 
Page pp.32-37 
Date of Issue 2021-02-24 (VLD, HWS) 

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