JP2001505038A - 利得精度を改善したシグマ―デルタ変調器 - Google Patents
利得精度を改善したシグマ―デルタ変調器Info
- Publication number
- JP2001505038A JP2001505038A JP51648299A JP51648299A JP2001505038A JP 2001505038 A JP2001505038 A JP 2001505038A JP 51648299 A JP51648299 A JP 51648299A JP 51648299 A JP51648299 A JP 51648299A JP 2001505038 A JP2001505038 A JP 2001505038A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- gain
- sigma
- input
- analog
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M3/00—Conversion of analogue values to or from differential modulation
- H03M3/30—Delta-sigma modulation
- H03M3/322—Continuously compensating for, or preventing, undesired influence of physical parameters
- H03M3/324—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement
- H03M3/326—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement by averaging out the errors
- H03M3/338—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement by averaging out the errors by permutation in the time domain, e.g. dynamic element matching
- H03M3/34—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement by averaging out the errors by permutation in the time domain, e.g. dynamic element matching by chopping
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M3/00—Conversion of analogue values to or from differential modulation
- H03M3/30—Delta-sigma modulation
- H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
- H03M3/412—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution
- H03M3/422—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only
- H03M3/424—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only the quantiser being a multiple bit one
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1. アナログ入力信号をディジタル出力信号に変換するシグマ−デルタ変調器で あって: − アナログ入力信号に応答して増幅入力信号を供給する第1利得段(2;2 0)を具えている入力回路網と; − 前記増幅入力信号と増幅帰還信号との比較結果に応答して差信号を供給す る手段(4)と; − 前記差信号をろ波し且つろ波した差信号を供給するフィルタリング手段( 6)と; − 前記ろ波した差信号をサンプリングすると共に量子化し、且つディジタル 出力信号を供給する出力端子を有している手段(8,10)と; − 前記ディジタル出力信号をアナログ帰還信号に変換するディジタル−アナ ログ変換器(12)及び前記アナログ帰還信号に応答して前記増幅帰還信号を 供給する第2利得段(14;22)を具えている帰還回路網と; を具えているシグマ−デルタ変調器において、当該シグマ−デルタ変調器がさ らに: − 前記第1利得段(2;20)と前記第2利得段(14;22)とを規則的 に入れ替える交換手段(44); を具えていることを特徴とするシグマ−デルタ変調器。 2. 前記変換手段が、アナログ入力信号及び増幅帰還信号を受信する入力端子( 46,48;54,56)を有すると共に前記第1(20)及び第2利得段( 22)の各入力端子(36,38:40,42)に結合されて、これらの各入 力端子にアナログ入力信号及び増幅帰還信号を規則的に入れ替えて供給する出 力端子(50,52;58,60)を有している第1スイッチング手段(44 )を具えていることを特徴とする請求の範囲1に記載のシグマ−デルタ変調器 。 3.前記第1及び第2利得段(20,22)が、反転出力端子及び非反転出力端 子を有する差動トランスコンダクタを具え、前記第1利得段(20)の反転出 力端子(26)と、前記第2利得段(22)の非反転出力端子(28)とを第 1ノード(32)にて相互接続して、第1減算信号を前記フィルタリング手段 (6)に供給し、且つ前記第1利得段(20)の非反転出力端子と、前記第2 利得段(22)の反転出力端子(30)とを第2ノード(34)にて相互接続 して、第2減算信号を前記フィルタリング手段(6)に供給するようにしたこ とを特徴とする請求の範囲1又は2に記載のシグマ−デルタ変調器。 4. 前記第1減算信号と、前記第2減算信号とを入れ替える第2スイッチング手 段(62)も具えていることを特徴とする請求の範囲3に記載のシグマ−デル タ変調器。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97202657 | 1997-08-29 | ||
EP97202657.9 | 1997-08-29 | ||
PCT/IB1998/001187 WO1999012264A2 (en) | 1997-08-29 | 1998-08-03 | Sigma-delta modulator with improved gain accuracy |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2001505038A true JP2001505038A (ja) | 2001-04-10 |
JP2001505038A5 JP2001505038A5 (ja) | 2006-01-05 |
JP3917193B2 JP3917193B2 (ja) | 2007-05-23 |
Family
ID=8228683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP51648299A Expired - Fee Related JP3917193B2 (ja) | 1997-08-29 | 1998-08-03 | 利得精度を改善したシグマ―デルタ変調器 |
Country Status (4)
Country | Link |
---|---|
US (1) | US6404367B1 (ja) |
EP (1) | EP0948843A2 (ja) |
JP (1) | JP3917193B2 (ja) |
WO (1) | WO1999012264A2 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013546283A (ja) * | 2010-12-08 | 2013-12-26 | 日本テキサス・インスツルメンツ株式会社 | フォワードパス乗算器を有するシグマ−デルタ二乗差対数rms−dcコンバータ |
JP2014504087A (ja) * | 2010-12-08 | 2014-02-13 | 日本テキサス・インスツルメンツ株式会社 | フォワード及びフィードバックパス信号二乗化を備えたシグマ−デルタ二乗差対数rms/dcコンバータ |
JP2017153051A (ja) * | 2016-02-26 | 2017-08-31 | 旭化成エレクトロニクス株式会社 | インクリメンタル型デルタシグマ変調器、変調方法、およびインクリメンタル型デルタシグマad変換器 |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7200187B2 (en) * | 2001-07-26 | 2007-04-03 | O'brien Thomas J | Modulator for digital amplifier |
JP4290560B2 (ja) * | 2002-01-30 | 2009-07-08 | エヌエックスピー ビー ヴィ | シグマデルタa/d変換器を有する電子回路 |
DE10331572B4 (de) * | 2003-07-11 | 2005-06-09 | Infineon Technologies Ag | Sigma-Delta-Wandleranordnung |
US7423566B2 (en) * | 2003-09-12 | 2008-09-09 | Texas Instruments Incorporated | Sigma-delta modulator using a passive filter |
US7098823B2 (en) * | 2004-01-15 | 2006-08-29 | Analog Devices, Inc. | Reduced chop rate analog to digital converter system and method |
US7593483B2 (en) * | 2004-05-07 | 2009-09-22 | Broadcom Corporation | Nonlinear mapping in digital-to-analog and analog-to-digital converters |
US7193545B2 (en) * | 2004-09-17 | 2007-03-20 | Analog Devices, Inc. | Differential front-end continuous-time sigma-delta ADC using chopper stabilization |
CN101044684B (zh) * | 2004-09-17 | 2012-11-14 | 美国亚德诺半导体公司 | 使用斩波稳定的多位连续时间前端∑-△adc |
JP4122325B2 (ja) * | 2004-10-01 | 2008-07-23 | 松下電器産業株式会社 | 利得制御機能付きデルタシグマ変調回路 |
US7463905B1 (en) * | 2004-12-09 | 2008-12-09 | Nortel Networks Limited | Cellular telephony mast cable reduction |
TWI329977B (en) * | 2005-11-09 | 2010-09-01 | Realtek Semiconductor Corp | Operational amplifier and related noise seperation method thereof |
DE102006004012B3 (de) * | 2006-01-27 | 2007-09-13 | Xignal Technologies Ag | Zeitkontinuierlicher Delta-Sigma-Analog-Digital-Wandler mit Operationsverstärkern |
TWI307223B (en) * | 2006-02-09 | 2009-03-01 | Realtek Semiconductor Corp | Signal processing system capable of changing signal levels |
US7679443B2 (en) * | 2006-08-31 | 2010-03-16 | Texas Instruments Incorporated | System and method for common mode translation |
US7623053B2 (en) | 2007-09-26 | 2009-11-24 | Medtronic, Inc. | Implantable medical device with low power delta-sigma analog-to-digital converter |
US7714757B2 (en) * | 2007-09-26 | 2010-05-11 | Medtronic, Inc. | Chopper-stabilized analog-to-digital converter |
US7999710B2 (en) * | 2009-09-15 | 2011-08-16 | Texas Instruments Incorporated | Multistage chopper stabilized delta-sigma ADC with reduced offset |
EP2592751B1 (en) | 2011-11-14 | 2017-05-31 | Dialog Semiconductor GmbH | A sigma-delta modulator for increased volume resolution in audio output stages |
US9859907B1 (en) | 2016-10-28 | 2018-01-02 | Analog Devices, Inc. | Systems and methods for removing errors in analog to digital converter signal chain |
US10298245B1 (en) | 2018-03-16 | 2019-05-21 | Synaptics Incorporated | Audio analog-to-digital converter systems and methods |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5030954A (en) * | 1990-09-17 | 1991-07-09 | General Electric Company | Double rate oversampled interpolative modulators for analog-to-digital conversion |
US5461381A (en) * | 1993-12-13 | 1995-10-24 | Motorola, Inc. | Sigma-delta analog-to-digital converter (ADC) with feedback compensation and method therefor |
US5838270A (en) * | 1995-01-12 | 1998-11-17 | Texas Instruments Incorporated | Second order and cascaded 2-1 oversampled modulators with improved dynamic range |
US5724037A (en) * | 1995-05-23 | 1998-03-03 | Analog Devices, Inc. | Data acquisition system for computed tomography scanning and related applications |
US5654711A (en) * | 1995-06-07 | 1997-08-05 | Asahi Kasei Microsystems Ltd. | Analog-to-digital converter with local feedback |
US5729230A (en) * | 1996-01-17 | 1998-03-17 | Hughes Aircraft Company | Delta-Sigma Δ-Σ modulator having a dynamically tunable continuous time Gm-C architecture |
US5754131A (en) * | 1996-07-01 | 1998-05-19 | General Electric Company | Low power delta sigma converter |
US5907299A (en) * | 1996-10-23 | 1999-05-25 | Sonix Technologies, Inc. | Analog-to digital converter with delta-sigma modulator |
DE19848778A1 (de) * | 1998-02-20 | 1999-09-02 | Hewlett Packard Co | Differenz-Bandpaß-Sigma-Delta-Analog-Digital- Wandler |
-
1998
- 1998-08-03 JP JP51648299A patent/JP3917193B2/ja not_active Expired - Fee Related
- 1998-08-03 WO PCT/IB1998/001187 patent/WO1999012264A2/en not_active Application Discontinuation
- 1998-08-03 EP EP98933856A patent/EP0948843A2/en not_active Withdrawn
- 1998-08-25 US US09/139,242 patent/US6404367B1/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013546283A (ja) * | 2010-12-08 | 2013-12-26 | 日本テキサス・インスツルメンツ株式会社 | フォワードパス乗算器を有するシグマ−デルタ二乗差対数rms−dcコンバータ |
JP2014504087A (ja) * | 2010-12-08 | 2014-02-13 | 日本テキサス・インスツルメンツ株式会社 | フォワード及びフィードバックパス信号二乗化を備えたシグマ−デルタ二乗差対数rms/dcコンバータ |
JP2017153051A (ja) * | 2016-02-26 | 2017-08-31 | 旭化成エレクトロニクス株式会社 | インクリメンタル型デルタシグマ変調器、変調方法、およびインクリメンタル型デルタシグマad変換器 |
Also Published As
Publication number | Publication date |
---|---|
US6404367B1 (en) | 2002-06-11 |
WO1999012264A2 (en) | 1999-03-11 |
WO1999012264A3 (en) | 1999-05-27 |
JP3917193B2 (ja) | 2007-05-23 |
EP0948843A2 (en) | 1999-10-13 |
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