FI911694A - Foerfarande och arrangemang foer stabilering av en hoegre grads sigma-delta-modulator - Google Patents

Foerfarande och arrangemang foer stabilering av en hoegre grads sigma-delta-modulator Download PDF

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Publication number
FI911694A
FI911694A FI911694A FI911694A FI911694A FI 911694 A FI911694 A FI 911694A FI 911694 A FI911694 A FI 911694A FI 911694 A FI911694 A FI 911694A FI 911694 A FI911694 A FI 911694A
Authority
FI
Finland
Prior art keywords
susma
delta modulator
modulator
delta
Prior art date
Application number
FI911694A
Other languages
English (en)
Other versions
FI911694A0 (fi
FI88765C (fi
FI88765B (fi
Inventor
Teppo Karema
Hannu Tenhunen
Tapani Ritoniemi
Original Assignee
Nokia Mobile Phones Ltd
Fincitec Oy
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 Mobile Phones Ltd, Fincitec Oy filed Critical Nokia Mobile Phones Ltd
Priority to FI911694A priority Critical patent/FI88765C/fi
Publication of FI911694A0 publication Critical patent/FI911694A0/fi
Priority to US07/863,063 priority patent/US5248972A/en
Priority to JP04087243A priority patent/JP3142946B2/ja
Priority to DE69214996T priority patent/DE69214996T2/de
Priority to EP92303093A priority patent/EP0512687B1/en
Publication of FI911694A publication Critical patent/FI911694A/fi
Application granted granted Critical
Publication of FI88765B publication Critical patent/FI88765B/fi
Publication of FI88765C publication Critical patent/FI88765C/fi

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
    • H03M3/366—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 feed-forward mode, e.g. using look-ahead circuits
    • 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
    • H03M3/44—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 provisions for rendering the modulator inherently stable
    • H03M3/446—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 provisions for rendering the modulator inherently stable by a particular choice of poles or zeroes in the z-plane, e.g. by positioning zeroes outside the unit circle, i.e. causing the modulator to operate in a chaotic regime
    • H03M3/448—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 provisions for rendering the modulator inherently stable by a particular choice of poles or zeroes in the z-plane, e.g. by positioning zeroes outside the unit circle, i.e. causing the modulator to operate in a chaotic regime by removing part of the zeroes, e.g. using local feedback loops
    • 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
    • H03M3/452—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 weighted feedforward summation, i.e. with feedforward paths from more than one filter stage to the quantiser input

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
FI911694A 1991-04-09 1991-04-09 Foerfarande och arrangemang foer stabilering av en hoegre grads sigma-delta-modulator FI88765C (fi)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FI911694A FI88765C (fi) 1991-04-09 1991-04-09 Foerfarande och arrangemang foer stabilering av en hoegre grads sigma-delta-modulator
US07/863,063 US5248972A (en) 1991-04-09 1992-04-03 Delta-sigma analog-to-digital converter with overload dependent modulator order
JP04087243A JP3142946B2 (ja) 1991-04-09 1992-04-08 高次シグマ−デルタ変調器の安定化構成
DE69214996T DE69214996T2 (de) 1991-04-09 1992-04-08 Modulator, insbesondere Sigma Delta Modulator
EP92303093A EP0512687B1 (en) 1991-04-09 1992-04-08 A modulator, in particular a sigma-delta modulator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI911694 1991-04-09
FI911694A FI88765C (fi) 1991-04-09 1991-04-09 Foerfarande och arrangemang foer stabilering av en hoegre grads sigma-delta-modulator

Publications (4)

Publication Number Publication Date
FI911694A0 FI911694A0 (fi) 1991-04-09
FI911694A true FI911694A (fi) 1992-10-10
FI88765B FI88765B (fi) 1993-03-15
FI88765C FI88765C (fi) 1993-06-28

Family

ID=8532277

Family Applications (1)

Application Number Title Priority Date Filing Date
FI911694A FI88765C (fi) 1991-04-09 1991-04-09 Foerfarande och arrangemang foer stabilering av en hoegre grads sigma-delta-modulator

Country Status (5)

Country Link
US (1) US5248972A (fi)
EP (1) EP0512687B1 (fi)
JP (1) JP3142946B2 (fi)
DE (1) DE69214996T2 (fi)
FI (1) FI88765C (fi)

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5274375A (en) * 1992-04-17 1993-12-28 Crystal Semiconductor Corporation Delta-sigma modulator for an analog-to-digital converter with low thermal noise performance
FR2716760B1 (fr) * 1994-02-28 1996-03-22 Thomson Csf Convertisseur analogique-numérique du type SIGMADELTA de degré élevé.
FI96649C (fi) * 1994-06-07 1996-07-25 Fincitec Oy Ylinäytteistetty korkeamman asteluvun modulaattori
US5736950A (en) * 1995-01-31 1998-04-07 The United States Of America As Represented By The Secretary Of The Navy Sigma-delta modulator with tunable signal passband
FI98020C (fi) * 1995-06-06 1997-03-25 Nokia Mobile Phones Ltd Digitaalisen signaalin modulointimenetelmä ja modulaattori
FI101027B (fi) * 1996-01-05 1998-03-31 Nokia Mobile Phones Ltd Multipleksoitu signaalimuunnos
US5742246A (en) * 1996-03-22 1998-04-21 National Science Council Stabilizing mechanism for sigma-delta modulator
KR19980021417A (ko) * 1996-09-16 1998-06-25 김광호 아날로그 디지탈(a d)변환장치
US5757301A (en) * 1997-05-01 1998-05-26 National Science Council Instability recovery method for sigma-delta modulators
GB2330707B (en) 1997-10-23 2001-10-24 Nokia Mobile Phones Ltd Digital to analogue converter
GB2330710B (en) * 1997-10-24 2001-07-25 Sony Uk Ltd Signal processors
FI105428B (fi) 1998-05-13 2000-08-15 Nokia Mobile Phones Ltd Menetelmä rinnakkais-A/D-muunnoksen virheen korjaamiseksi, korjain ja rinnakkais-A/D-muunnin
FI120124B (fi) 1998-05-29 2009-06-30 Nokia Corp Menetelmä ja piiri signaalin näytteistämiseksi suurella näytteistystaajuudella
GB9917567D0 (en) 1999-07-28 1999-09-29 Koninkl Philips Electronics Nv Variable order sigma-delta modulator
JP2001237707A (ja) * 2000-02-18 2001-08-31 Sony Corp デジタル信号処理装置及び方法、並びにδς変調器
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.
EP1202461B1 (en) * 2000-10-25 2005-03-09 STMicroelectronics S.r.l. A method of improving the signal/noise ratio of a sigma-delta modulator and a circuit which uses the method
US6724332B1 (en) * 2002-08-13 2004-04-20 Cirrus Logic, Inc. Noise shaping circuits and methods with feedback steering overload compensation and systems using the same
US6933871B2 (en) * 2001-09-17 2005-08-23 Cirrus Logic, Inc. Feedback steering delta-sigma modulators and systems using the same
US6556159B1 (en) * 2001-09-17 2003-04-29 Cirrus Logic, Inc. Variable order modulator
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
JP2007528138A (ja) * 2003-06-27 2007-10-04 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ シグマデルタ変調器を備えたアナログディジタル変換器およびそのようなアナログディジタル変換器を備えた受信機
US6992606B2 (en) * 2003-07-09 2006-01-31 Texas Instruments Incorporated Method and circuit for multi-standard sigma-delta modulator
US7212137B2 (en) * 2003-10-09 2007-05-01 Cirrus Logic, Inc. Delta sigma modulator with integral decimation
US7196647B2 (en) 2004-01-16 2007-03-27 Cirrus Logic, Inc. Signal processing with look-ahead modulator noise quantization minimization
US7084798B2 (en) 2004-01-16 2006-08-01 Cirrus Logic, Inc. Look-ahead delta sigma modulators with quantizer input approximations
US7170434B2 (en) 2004-01-16 2007-01-30 Cirrus Logic, Inc. Look-ahead delta sigma modulator with quantization using natural and pattern loop filter responses
US7187312B2 (en) 2004-01-16 2007-03-06 Cirrus Logic, Inc. Look-ahead delta sigma modulator having an infinite impulse response filter with multiple look-ahead outputs
US7138934B2 (en) 2004-01-26 2006-11-21 Cirrus Logic, Inc. Pattern biasing for look-ahead delta sigma modulators
US7148830B2 (en) 2004-01-26 2006-12-12 Cirrus Logic, Inc. Look-ahead delta sigma modulator with pruning of output candidate vectors using quantization error minimization pruning techniques
US7081843B2 (en) * 2004-07-19 2006-07-25 Cirrus Logic, Inc. Overload protection for look-ahead delta sigma modulators
US7321324B2 (en) * 2005-06-30 2008-01-22 Silicon Laboratories Inc. Unconditionally stable analog-to-digital converter
US7315264B2 (en) * 2006-01-17 2008-01-01 D2Audio Corporation Systems and methods for controlling transient response in the output of a noise shaper
TWI312619B (en) * 2006-07-26 2009-07-21 Ite Tech Inc Delta-sigma analog to digital converter and method thereof
US7868803B2 (en) * 2006-10-13 2011-01-11 Panasonic Corporation Semiconductor device having ΔΣ modulator, and semiconductor system
US7986929B2 (en) * 2006-12-08 2011-07-26 Silicon Laboratories Inc. Providing channel filtering in an automatic frequency control path
JP2008263258A (ja) * 2007-04-10 2008-10-30 Matsushita Electric Ind Co Ltd デルタシグマ変調回路とそれを用いたデルタシグマａｄ変換装置
JP4890503B2 (ja) * 2008-06-17 2012-03-07 旭化成エレクトロニクス株式会社 デルタシグマ変調器
US9455736B2 (en) 2014-12-22 2016-09-27 Onkyo Corporation ΔΣ modulator and program of ΔΣ modulator
JP6160604B2 (ja) 2014-12-22 2017-07-12 オンキヨー株式会社 Δς変調器およびそのプログラム

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4509037A (en) * 1981-06-12 1985-04-02 Gould Inc. Enhanced delta modulation encoder
CA1184660A (en) * 1981-06-12 1985-03-26 Robert W. Harris Enhanced delta modulation encoder
US5012244A (en) * 1989-10-27 1991-04-30 Crystal Semiconductor Corporation Delta-sigma modulator with oscillation detect and reset circuit
NL9100379A (nl) * 1991-03-01 1992-10-01 Philips Nv Sigma-deltamodulator.

Also Published As

Publication number Publication date
US5248972A (en) 1993-09-28
DE69214996D1 (de) 1996-12-12
FI911694A0 (fi) 1991-04-09
FI88765C (fi) 1993-06-28
DE69214996T2 (de) 1997-04-10
JP3142946B2 (ja) 2001-03-07
EP0512687A2 (en) 1992-11-11
EP0512687B1 (en) 1996-11-06
JPH05110442A (ja) 1993-04-30
FI88765B (fi) 1993-03-15
EP0512687A3 (en) 1993-06-09

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Owner name: NOKIA MATKAPUHELIMET OY