DE60018573D1 - Verfahren zur Verbesserung des Signal/Rausch-Verhältnisses eines Sigma/Delta-Modulators und dieses Verfahren benutzender Schaltkreis - Google Patents

Verfahren zur Verbesserung des Signal/Rausch-Verhältnisses eines Sigma/Delta-Modulators und dieses Verfahren benutzender Schaltkreis

Info

Publication number
DE60018573D1
DE60018573D1 DE60018573T DE60018573T DE60018573D1 DE 60018573 D1 DE60018573 D1 DE 60018573D1 DE 60018573 T DE60018573 T DE 60018573T DE 60018573 T DE60018573 T DE 60018573T DE 60018573 D1 DE60018573 D1 DE 60018573D1
Authority
DE
Germany
Prior art keywords
sigma
improving
circuit
signal
noise ratio
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.)
Expired - Lifetime
Application number
DE60018573T
Other languages
English (en)
Other versions
DE60018573T2 (de
Inventor
Paolo Cusinato
Andrea Baschirotto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STMicroelectronics SRL
Original Assignee
STMicroelectronics SRL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by STMicroelectronics SRL filed Critical STMicroelectronics SRL
Application granted granted Critical
Publication of DE60018573D1 publication Critical patent/DE60018573D1/de
Publication of DE60018573T2 publication Critical patent/DE60018573T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H03M3/358—Continuously compensating for, or preventing, undesired influence of physical parameters of non-linear distortion, e.g. instability
    • H03M3/36—Continuously compensating for, or preventing, undesired influence of physical parameters of non-linear distortion, e.g. instability by temporarily adapting the operation upon detection of instability conditions
    • H03M3/362—Continuously compensating for, or preventing, undesired influence of physical parameters of non-linear distortion, e.g. instability by temporarily adapting the operation upon detection of instability conditions in feedback mode, e.g. by reducing the order of the modulator
    • H03M3/364—Continuously compensating for, or preventing, undesired influence of physical parameters of non-linear distortion, e.g. instability by temporarily adapting the operation upon detection of instability conditions in feedback mode, e.g. by reducing the order of the modulator by resetting one or more loop filter stages
    • 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
    • H03M3/402—Arrangements specific to bandpass modulators
    • H03M3/404—Arrangements specific to bandpass modulators characterised by the type of bandpass filters used
    • H03M3/406—Arrangements specific to bandpass modulators characterised by the type of bandpass filters used by the use of a pair of integrators forming a closed loop
    • 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
    • H03M3/43—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 single bit one
    • 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
    • H03M3/436—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type
    • H03M3/438—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path
    • H03M3/45—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path with distributed feedforward inputs, i.e. with forward paths from the modulator input to more than one filter stage
    • 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
    • H03M3/436—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type
    • H03M3/438—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path
    • H03M3/454—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path with distributed feedback, i.e. with feedback paths from the quantiser output to more than one filter stage

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
DE60018573T 2000-10-25 2000-10-25 Verfahren zur Verbesserung des Signal/Rausch-Verhältnisses eines Sigma/Delta-Modulators und dieses Verfahren benutzender Schaltkreis Expired - Lifetime DE60018573T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00830700A EP1202461B1 (de) 2000-10-25 2000-10-25 Verfahren zur Verbesserung des Signal/Rausch-Verhältnisses eines Sigma/Delta-Modulators und dieses Verfahren benutzender Schaltkreis

Publications (2)

Publication Number Publication Date
DE60018573D1 true DE60018573D1 (de) 2005-04-14
DE60018573T2 DE60018573T2 (de) 2006-01-19

Family

ID=8175519

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60018573T Expired - Lifetime DE60018573T2 (de) 2000-10-25 2000-10-25 Verfahren zur Verbesserung des Signal/Rausch-Verhältnisses eines Sigma/Delta-Modulators und dieses Verfahren benutzender Schaltkreis

Country Status (3)

Country Link
US (1) US6621435B2 (de)
EP (1) EP1202461B1 (de)
DE (1) DE60018573T2 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7123177B2 (en) * 2000-11-17 2006-10-17 Broadcom Corporation System and method for stabilizing high order sigma delta modulators
JP3902120B2 (ja) * 2002-11-25 2007-04-04 パイオニア株式会社 デルタシグマ変調器およびディジタルアンプ
TWI231098B (en) * 2002-12-27 2005-04-11 Novatek Microelectronics Corp Correcting system and method of successive approximation A/D converter
US6992606B2 (en) * 2003-07-09 2006-01-31 Texas Instruments Incorporated Method and circuit for multi-standard sigma-delta modulator
GB0514677D0 (en) 2005-07-18 2005-08-24 Queen Mary & Westfield College Sigma delta modulators
US7312738B2 (en) * 2005-10-27 2007-12-25 Texas Instruments Incorporated Apparatus and method for sigma delta signal treatment
US7420493B2 (en) * 2007-01-10 2008-09-02 Texas Instruments Incorporated Extended range delta-sigma modulator and delta-sigma power converter
US7619549B2 (en) * 2007-10-18 2009-11-17 Honeywell International Inc. Methods and systems for reducing a sign-bit pulse at a voltage output of a sigma-delta digital-to-analog converter
US9207337B2 (en) 2007-12-12 2015-12-08 Westerngeco L.L.C. Systems and methods for seismic data acquisition employing clock source selection in seismic nodes
EP2327164A2 (de) 2008-08-15 2011-06-01 Nxp B.V. Sigma-delta-modulator

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3971987A (en) * 1975-02-07 1976-07-27 International Business Machines Corporation Gain method and apparatus for a delta modulator
US5012244A (en) * 1989-10-27 1991-04-30 Crystal Semiconductor Corporation Delta-sigma modulator with oscillation detect and reset circuit
JP3048452B2 (ja) * 1990-11-30 2000-06-05 株式会社東芝 Ａｄ変換器
FI88765C (fi) * 1991-04-09 1993-06-28 Nokia Mobile Phones Ltd Foerfarande och arrangemang foer stabilering av en hoegre grads sigma-delta-modulator
US5283578A (en) * 1992-11-16 1994-02-01 General Electric Company Multistage bandpass Δ Σ modulators and analog-to-digital converters
FI96649C (fi) * 1994-06-07 1996-07-25 Fincitec Oy Ylinäytteistetty korkeamman asteluvun modulaattori
GB2314707B (en) * 1996-06-25 2000-01-19 Racal Res Ltd Sigma-delta analogue-to-digital conversion circuits
US5757301A (en) * 1997-05-01 1998-05-26 National Science Council Instability recovery method for sigma-delta modulators
US6061009A (en) * 1998-03-30 2000-05-09 Silicon Laboratories, Inc. Apparatus and method for resetting delta-sigma modulator state variables using feedback impedance
US6157331A (en) * 1998-10-01 2000-12-05 Tritech Microelectronics, Ltd. Sigma delta modulator with automatic saturation detection and recovery
IT1315978B1 (it) * 2000-07-31 2003-03-26 St Microelectronics Srl Metodo per ripristinare la stabilita' di un modulatore sigma-delta ecircuito per mettere in pratica tale metodo.
US6396428B1 (en) * 2001-06-04 2002-05-28 Raytheon Company Continuous time bandpass delta sigma modulator ADC architecture with feedforward signal compensation

Also Published As

Publication number Publication date
US6621435B2 (en) 2003-09-16
US20020084924A1 (en) 2002-07-04
EP1202461A1 (de) 2002-05-02
DE60018573T2 (de) 2006-01-19
EP1202461B1 (de) 2005-03-09

Similar Documents

Publication Publication Date Title
DE60137883D1 (de) Verfahren und Schaltung zum Korrigieren des Tastverhältnisses eines Signals
DE60024404D1 (de) Verfahren und Vorrichtung zur Vorverzerrung eines digitalen Signales
DE60220300D1 (de) Schaltung zur detektion eines taktsignalverlusts und verfahren dazu
DE60134916D1 (de) Verfahren und Gerät zur Signal/Rauschverhältnisverbesserung in Digital-Analog-Wandlung eines pulsdichtemodulierten Signals
DE59901027D1 (de) Verfahren zur auswertung von signalen magnetoresistiver sensoren
DE60043504D1 (de) Verfahren und gerät zur störungsunterdrückung eines signals
DE69803203D1 (de) Verfahren und vorrichtung zur rauschunterdrückung eines digitalen sprachsignals
DE60045597D1 (de) Verfahren und Schaltung zur Erfassung eines Signals
DE50107708D1 (de) Anordnung und verfahren zur datenübertragung von digitalen übertragungsdaten
DE60107308D1 (de) Verfahren zur Erzeugung eines Wasserzeichens für Audiosignale
DE59808087D1 (de) Verfahren und anordnung zur wiedergabe eines stereophonen audiosignals
DE69901273D1 (de) Verfahren zur Codierung und Quantisierung von Audiosignalen
DE50210076D1 (de) Verfahren und vorrichtung zur konversion von video signalen
DE60018573D1 (de) Verfahren zur Verbesserung des Signal/Rausch-Verhältnisses eines Sigma/Delta-Modulators und dieses Verfahren benutzender Schaltkreis
DE69834211D1 (de) Vorrichtung und verfahren zur verminderung der amplitude von signalen
DE50108462D1 (de) Verfahren und sendeschaltung zur erzeugung eines sendesignals
DE69940177D1 (de) Schaltung zur Erkennung von Spitzenwerten eines zeitdiskreten Signals durch eine appoximierte Funktion
DE50207531D1 (de) Verfahren und vorrichtung zur unterdrückung von periodischen störsignalen
DE60135406D1 (de) Verfahren und Mischer zur Erzeugung eines Zwischenfrequenzsignals
DE60114683D1 (de) Vorrichtung und Verfahren zur Erzeugung von Taktsignalen
DE50204178D1 (de) Verfahren zur auswertung eines messsignals und zugehörige schaltungsanordnung
DE69733000D1 (de) Verfahren und schaltung zur reduktion von offsetspannung eines signals
DE60135734D1 (de) Verfahren und vorrichtung zum erzeugen eines pulsbreitenmodulierten signals
DE60031502D1 (de) Verfahren und Vorrichtung zur Typbestimmung eines Formblatts
DE50115178D1 (de) Verfahren und vorrichtung zur ermittlung eines kennwertes einer radbremse

Legal Events

Date Code Title Description
8364 No opposition during term of opposition