CA2229756A1 - Methode et appareil de correction de desadaptation d'elements dans les convertisseurs numerique/analogique - Google Patents

Methode et appareil de correction de desadaptation d'elements dans les convertisseurs numerique/analogique Download PDF

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Publication number
CA2229756A1
CA2229756A1 CA 2229756 CA2229756A CA2229756A1 CA 2229756 A1 CA2229756 A1 CA 2229756A1 CA 2229756 CA2229756 CA 2229756 CA 2229756 A CA2229756 A CA 2229756A CA 2229756 A1 CA2229756 A1 CA 2229756A1
Authority
CA
Canada
Prior art keywords
dac
digital
elements
frequency
pointers
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.)
Abandoned
Application number
CA 2229756
Other languages
English (en)
Inventor
Ashok Swaminathan
Edward William Macrobbie
William Martin Snelgrove
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.)
Philsar Electronics Inc
Original Assignee
Philsar Electronics Inc
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 Philsar Electronics Inc filed Critical Philsar Electronics Inc
Priority to CA 2229756 priority Critical patent/CA2229756A1/fr
Publication of CA2229756A1 publication Critical patent/CA2229756A1/fr
Abandoned legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/0617—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence
    • H03M1/0634—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence by averaging out the errors, e.g. using sliding scale
    • H03M1/0656—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence by averaging out the errors, e.g. using sliding scale in the time domain, e.g. using intended jitter as a dither signal
    • H03M1/066—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence by averaging out the errors, e.g. using sliding scale in the time domain, e.g. using intended jitter as a dither signal by continuously permuting the elements used, i.e. dynamic element matching
    • H03M1/0665—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence by averaging out the errors, e.g. using sliding scale in the time domain, e.g. using intended jitter as a dither signal by continuously permuting the elements used, i.e. dynamic element matching using data dependent selection of the elements, e.g. data weighted averaging
    • 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
    • H03M3/458—Analogue/digital converters using delta-sigma modulation as an intermediate step
    • H03M3/464—Details of the digital/analogue conversion in the feedback path

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)
CA 2229756 1998-02-18 1998-02-18 Methode et appareil de correction de desadaptation d'elements dans les convertisseurs numerique/analogique Abandoned CA2229756A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2229756 CA2229756A1 (fr) 1998-02-18 1998-02-18 Methode et appareil de correction de desadaptation d'elements dans les convertisseurs numerique/analogique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2229756 CA2229756A1 (fr) 1998-02-18 1998-02-18 Methode et appareil de correction de desadaptation d'elements dans les convertisseurs numerique/analogique

Publications (1)

Publication Number Publication Date
CA2229756A1 true CA2229756A1 (fr) 1999-08-18

Family

ID=29409292

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2229756 Abandoned CA2229756A1 (fr) 1998-02-18 1998-02-18 Methode et appareil de correction de desadaptation d'elements dans les convertisseurs numerique/analogique

Country Status (1)

Country Link
CA (1) CA2229756A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1139570A2 (fr) * 2000-03-28 2001-10-04 Kabushiki Kaisha Toshiba Circuit de sélection, convertisseur numérique-analogique et convertisseur analogique-numérique
EP1402644A2 (fr) * 2001-06-27 2004-03-31 Nokia Corporation Procede et appareil de suppression de signaux sonores induits par des algorithmes de concordance d'elements dynamiques cycliques (dem)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1139570A2 (fr) * 2000-03-28 2001-10-04 Kabushiki Kaisha Toshiba Circuit de sélection, convertisseur numérique-analogique et convertisseur analogique-numérique
EP1139570A3 (fr) * 2000-03-28 2004-04-07 Kabushiki Kaisha Toshiba Circuit de sélection, convertisseur numérique-analogique et convertisseur analogique-numérique
EP1402644A2 (fr) * 2001-06-27 2004-03-31 Nokia Corporation Procede et appareil de suppression de signaux sonores induits par des algorithmes de concordance d'elements dynamiques cycliques (dem)
EP1402644A4 (fr) * 2001-06-27 2004-09-01 Nokia Corp Procede et appareil de suppression de signaux sonores induits par des algorithmes de concordance d'elements dynamiques cycliques (dem)

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