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

Info

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

Links

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)

Similar Documents

Publication Publication Date Title
US6583742B1 (en) Digital to analogue converter with dynamic element matching
CN100521543C (zh) 用于抑制循环动态单元匹配算法所引入的谐波的方法和装置
US6930626B2 (en) Computer program product for mismatched shaping of an oversampled converter
US4467316A (en) Generalized interpolative method for digital/analog conversion of PCM signals
US4621254A (en) Apparatus and methods for analogue-to-digital conversion
US6611221B1 (en) Multi-bit sigma-delta modulator employing dynamic element matching using adaptively randomized data-weighted averaging
US5006854A (en) Method and apparatus for converting A/D nonlinearities to random noise
US6266002B1 (en) 2nd order noise shaping dynamic element matching for multibit data converters
US5124705A (en) Analog-to-digital signal converter comprising a multiple sigma-delta modulator
EP0060583A1 (fr) Système pour la quantification de signaux
US7982648B2 (en) Dynamic element matching digital/analog conversion system and sigma-delta modulator using the same
US7324032B2 (en) Method of matching dynamic elements and multi-bit data converter
US7030798B2 (en) State-delayed technique and system to remove tones of dynamic element matching
US9214953B1 (en) Generalized data weighted averaging method for equally weighted multi-bit D/A elements
US4016410A (en) Signal processor with digital filter and integrating network
US5181033A (en) Digital filter for filtering and decimating delta sigma modulator output signals
WO2001031793A1 (fr) Convertisseur numerique-analogique
US5606319A (en) Method and apparatus for interpolation and noise shaping in a signal converter
EP1273102B1 (fr) Convertisseur numerique/analogique
US6292124B1 (en) Delta-sigma D/A converter
US6753799B2 (en) Randomizer for sigma-delta-type converter
US6867721B1 (en) Spectral shaping dynamic encoder for a DAC
CA2229756A1 (fr) Methode et appareil de correction de desadaptation d'elements dans les convertisseurs numerique/analogique
IES960171A2 (en) Reduction of mismatch errors for multibit oversampled data converters
US6720897B1 (en) State-delayed technique and system to remove tones of dynamic element matching

Legal Events

Date Code Title Description
FZDE Dead