WO2003001674A3 - Multi-level quantizer delta sigma modulator with current mode dem and dem decision logic - Google Patents

Multi-level quantizer delta sigma modulator with current mode dem and dem decision logic Download PDF

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Publication number
WO2003001674A3
WO2003001674A3 PCT/IB2002/002226 IB0202226W WO03001674A3 WO 2003001674 A3 WO2003001674 A3 WO 2003001674A3 IB 0202226 W IB0202226 W IB 0202226W WO 03001674 A3 WO03001674 A3 WO 03001674A3
Authority
WO
WIPO (PCT)
Prior art keywords
dem
quantizer
decision logic
current mode
sigma modulator
Prior art date
Application number
PCT/IB2002/002226
Other languages
French (fr)
Other versions
WO2003001674A2 (en
Inventor
Antti Ruha
Tarmo Ruotsalainen
Jussi-Pekka Tervaluoto
Original Assignee
Nokia Corp
Nokia 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 Nokia Corp, Nokia Inc filed Critical Nokia Corp
Priority to KR1020037016878A priority Critical patent/KR100958117B1/en
Priority to EP02735826A priority patent/EP1400017B1/en
Priority to AU2002309160A priority patent/AU2002309160A1/en
Priority to DE60239867T priority patent/DE60239867D1/en
Publication of WO2003001674A2 publication Critical patent/WO2003001674A2/en
Publication of WO2003001674A3 publication Critical patent/WO2003001674A3/en

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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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/04—Differential modulation with several bits, e.g. differential pulse code modulation [DPCM]
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/34—Analogue value compared with reference values
    • H03M1/36—Analogue value compared with reference values simultaneously only, i.e. parallel type
    • H03M1/361—Analogue value compared with reference values simultaneously only, i.e. parallel type having a separate comparator and reference value for each quantisation level, i.e. full flash converter type
    • 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
    • H03M3/328—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 using dither
    • H03M3/3287—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 using dither the dither being at least partially dependent on the input signal
    • 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
    • H03M3/328—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 using dither
    • H03M3/33—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 using dither the dither being a random signal
    • H03M3/332—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 using dither the dither being a random signal in particular a pseudo-random signal
    • 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
    • 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

Abstract

A multilevel quantizer (14) is provided in combination with dynamic element matching DEM (20) circuitry in a multibit sigma-delta modulator (10). The DEM circuitry is implemented in a divided manner as two major component parts: at least one current mode DEM switch matrix (20B)(SM), and an associated DEM decision logic block that implements the DEM control algorithm (20A) and that controls the SM. The DEM decision logic block is removed from the delay sensitive sigma-delta feedback loop, while the DEM SM remains within the feedback loop. Also described is a convenient and efficient technique to implement the DEM SM, using current steering logic within the multibit quantizer. In this case one or more DEM switching matrices may be provided within the quantizer for reordering the N-1 digital output bits of the N-level quantizer.
PCT/IB2002/002226 2001-06-26 2002-06-12 Multi-level quantizer delta sigma modulator with current mode dem and dem decision logic WO2003001674A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020037016878A KR100958117B1 (en) 2001-06-26 2002-06-12 Multi-level quantizer delta sigma modulator with current mode DEM and DEM decision logic
EP02735826A EP1400017B1 (en) 2001-06-26 2002-06-12 A multi-level quantizer with current mode dem switch matrices and separate dem decision logic for a multibit sigma delta modulator
AU2002309160A AU2002309160A1 (en) 2001-06-26 2002-06-12 Multi-level quantizer delta sigma modulator with current mode dem and dem decision logic
DE60239867T DE60239867D1 (en) 2001-06-26 2002-06-12 MULTI-LEVEL QUANTIZER WITH ELECTRICITY MODIFICATION MULTI-BIT SIGMA DELTA MODULATOR

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/892,145 2001-06-26
US09/892,145 US6426714B1 (en) 2001-06-26 2001-06-26 Multi-level quantizer with current mode DEM switch matrices and separate DEM decision logic for a multibit sigma delta modulator

Publications (2)

Publication Number Publication Date
WO2003001674A2 WO2003001674A2 (en) 2003-01-03
WO2003001674A3 true WO2003001674A3 (en) 2003-04-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2002/002226 WO2003001674A2 (en) 2001-06-26 2002-06-12 Multi-level quantizer delta sigma modulator with current mode dem and dem decision logic

Country Status (7)

Country Link
US (1) US6426714B1 (en)
EP (2) EP1819044B1 (en)
KR (2) KR100923481B1 (en)
CN (1) CN1327618C (en)
AU (1) AU2002309160A1 (en)
DE (2) DE60232111D1 (en)
WO (1) WO2003001674A2 (en)

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Also Published As

Publication number Publication date
KR20080109887A (en) 2008-12-17
EP1400017B1 (en) 2011-04-27
KR100923481B1 (en) 2009-11-02
KR20040011555A (en) 2004-02-05
EP1819044A1 (en) 2007-08-15
DE60232111D1 (en) 2009-06-04
CN1520639A (en) 2004-08-11
EP1819044B1 (en) 2009-04-22
EP1400017A2 (en) 2004-03-24
EP1400017A4 (en) 2005-03-09
KR100958117B1 (en) 2010-05-18
CN1327618C (en) 2007-07-18
AU2002309160A1 (en) 2003-01-08
DE60239867D1 (en) 2011-06-09
US6426714B1 (en) 2002-07-30
WO2003001674A2 (en) 2003-01-03

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