A High Dynamic Range and Low Power Consumption Audio Delta-Sigma Modulator with Opamp Sharing Technique among Three Integrators

Kanemoto, Daisuke; Ido, Toru; Taniguchi, Kenji

IEICE Transactions on Electronics, 2012, E95-C(8), 1427-1433

Number of Access:328（2025-09-28 05:55 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/97772

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Title
A High Dynamic Range and Low Power Consumption Audio Delta-Sigma Modulator with Opamp Sharing Technique among Three Integrators
Creator
NRID
1000090603332 1000090603332
researchmap permalink
dkanemoto dkanemoto
Scopus Author ID
6504308983 6504308983
ORCID
0009-0002-7564-6351 0009-0002-7564-6351
CreatorName
Kanemoto, Daisuke
CreatorName
Ido, Toru
NRID
1000020192180 1000020192180
researchmap permalink
read0014089 read0014089
CreatorName
Taniguchi, Kenji
Subject
Audio application
Deltasigma analog-to-digital converter
Opamp sharing technique
Switched capacitor integrator
Description
Kanemoto D., Ido T., Taniguchi K.. A high dynamic range and low power consumption audio delta-sigma modulator with opamp sharing technique among three integrators. IEICE Transactions on Electronics E95-C, 1427 (2012); https://doi.org/10.1587/transele.E95.C.1427.
Abstract
A low power and high performance with third order deltasigma modulator for audio applications, fabricated in a 0.18 μmCMOS process, is presented. The modulator utilizes a third order noise shaping with only one opamp by using an opamp sharing technique. The opamp sharing among three integrator stages is achieved through the optimal operation timing, which makes use of the load capacitance differences between the three integrator stages. The designed modulator achieves 101.1 dB signalto-noise ratio (A-weighted) and 101.5 dB dynamic range (A-weighted) with 7.5mWpower consumption from a 3.3V supply. The die area is 1.27mm2. The fabricated delta-sigma modulator achieves the highest figure-of-merit among published high performance low power audio delta-sigma modulators.
Publisher
電子情報通信学会
Institute of Electronics, Information and Communication, Engineers, IEICE
Source Title
IEICE Transactions on Electronics
Volume (Issue)
E95-C(8)
Page
1427-1433
Date of Issued
2012-08-01
Language
English
Handle URL
https://hdl.handle.net/11094/97772
PISSN
09168524
eISSN
17451353
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1587/transele.E95.C.1427
Access Rights
open access
CopyRight
Copyright © 2012 The Institute of Electronics, Information and Communication Engineers
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article