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Paper Abstract and Keywords
Presentation 2009-12-15 14:45
Sturdy-MASH-type ΔΣAD Modulator with Wide Dynamic Range
Takafumi Yamada, Hajime Konagaya (Gunma Univ), Hao San (Tokyo City Univ), Haruo Kobayashi (Gunma Univ) ICD2009-100
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes a novel multi-stage noise shaping (MASH) architecture of ΔΣAD modulator which is robust against quantization noise leakage and has wide dynamic range. The MASH architecture has been widely used for low oversampling ratio (OSR) ΔΣAD modulator to solve the stability problem in a high-order modulator. However, the performance of MASH architecture ΔΣAD modulator suffers from the leakage of quantization noise which is caused by the mismatches between the analog and digital filters in the modulator. A sturdy MASH (SMASH) architecture has been proposed to relax the matching requirement with the penalty of the decreasing dynamic range of the modulator. In this paper, we present a new MASH architecture of ΔΣAD modulator. The high-order modulator is proposed similar to the MASH architecture without any stability problem, the quantization noise leakage is systematically suppressed, and the dynamic range of the modulator is improved compared to the SMASH modulator. We have performed MATLAB and SPICE simulation to verify the proposed architecture, and the simulation results prove the effectiveness of this structure.
Keyword (in Japanese) (See Japanese page) 
(in English) ΔΣAD Modulator / MASH Architecture / SMASH Architecture / Dynamic Range / / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 336, ICD2009-100, pp. 133-137, Dec. 2009.
Paper # ICD2009-100 
Date of Issue 2009-12-07 (ICD) 
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 ICD2009-100

Conference Information
Committee ICD  
Conference Date 2009-12-14 - 2009-12-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Shizuoka University (Hamamatsu) 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ICD 
Conference Code 2009-12-ICD 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Sturdy-MASH-type ΔΣAD Modulator with Wide Dynamic Range 
Sub Title (in English)  
Keyword(1) ΔΣAD Modulator  
Keyword(2) MASH Architecture  
Keyword(3) SMASH Architecture  
Keyword(4) Dynamic Range  
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1st Author's Name Takafumi Yamada  
1st Author's Affiliation Gunma University (Gunma Univ)
2nd Author's Name Hajime Konagaya  
2nd Author's Affiliation Gunma University (Gunma Univ)
3rd Author's Name Hao San  
3rd Author's Affiliation Tokyo City University (Tokyo City Univ)
4th Author's Name Haruo Kobayashi  
4th Author's Affiliation Gunma University (Gunma Univ)
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Speaker Author-1 
Date Time 2009-12-15 14:45:00 
Presentation Time 25 minutes 
Registration for ICD 
Paper # ICD2009-100 
Volume (vol) vol.109 
Number (no) no.336 
Page pp.133-137 
#Pages 5 
Date of Issue 2009-12-07 (ICD) 

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