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Paper Abstract and Keywords
Presentation 2016-12-16 15:20
A Study of High Linearity Gm-cells for a Wide Bandwidth Delta Sigma Analog to Digital Convertor
Tohru Kaneko, Yuya Kimura, Koji Hirose, Masaya Miyahara, Akira Matsuzawa (Tokyo Tech) ICD2016-97 CPSY2016-103
Abstract (in Japanese) (See Japanese page) 
(in English) A Gm-cell integrator is preferred to an op-amp integrator for applying to a continuous-time $Delta Sigma$ analog to digital converter (CT $DeltaSigma$ ADC) having a wide bandwidth.
However, linearity of conventional Gm-cells including a source degeneration and a flipped voltage follower (FVF) is not enough to obtain good SNDR of the CT $DeltaSigma$ ADC.
A cascoded FVF Gm-cell which has cascode transistors in its feedback loops is considered in order to solve this issue.
The cascoded FVF Gm-cell has better IIP3 than the conventional Gm-cells by 8dB according to the simulation results in a 65nm CMOS technology.
A designed 20MHz bandwidth CT $DeltaSigma$ ADC employing the cascoded FVF Gm-cell achieves SNDR of 72dB with power consumption of 7mW.
Keyword (in Japanese) (See Japanese page) 
(in English) Delta Sigma Modulator / Gm-Cell / High Linearity / / / / /  
Reference Info. IEICE Tech. Rep., vol. 116, no. 364, ICD2016-97, pp. 145-150, Dec. 2016.
Paper # ICD2016-97 
Date of Issue 2016-12-08 (ICD, CPSY) 
ISSN Print edition: ISSN 0913-5685    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 ICD2016-97 CPSY2016-103

Conference Information
Committee ICD CPSY  
Conference Date 2016-12-15 - 2016-12-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo Institute of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ICD 
Conference Code 2016-12-ICD-CPSY 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study of High Linearity Gm-cells for a Wide Bandwidth Delta Sigma Analog to Digital Convertor 
Sub Title (in English)  
Keyword(1) Delta Sigma Modulator  
Keyword(2) Gm-Cell  
Keyword(3) High Linearity  
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Keyword(5)  
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1st Author's Name Tohru Kaneko  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
2nd Author's Name Yuya Kimura  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
3rd Author's Name Koji Hirose  
3rd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
4th Author's Name Masaya Miyahara  
4th Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
5th Author's Name Akira Matsuzawa  
5th Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
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Speaker Author-1 
Date Time 2016-12-16 15:20:00 
Presentation Time 25 minutes 
Registration for ICD 
Paper # ICD2016-97, CPSY2016-103 
Volume (vol) vol.116 
Number (no) no.364(ICD), no.365(CPSY) 
Page pp.145-150 
#Pages 6 
Date of Issue 2016-12-08 (ICD, CPSY) 

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