DE69231317T2 - Sigma-delta Modulator - Google Patents

Sigma-delta Modulator

Info

Publication number
DE69231317T2
DE69231317T2 DE69231317T DE69231317T DE69231317T2 DE 69231317 T2 DE69231317 T2 DE 69231317T2 DE 69231317 T DE69231317 T DE 69231317T DE 69231317 T DE69231317 T DE 69231317T DE 69231317 T2 DE69231317 T2 DE 69231317T2
Authority
DE
Germany
Prior art keywords
delta modulator
sigma delta
sigma
modulator
delta
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 - Fee Related
Application number
DE69231317T
Other languages
English (en)
Other versions
DE69231317D1 (de
Inventor
Steven Robert Norsworthy
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.)
AT&T Corp
Original Assignee
AT&T Corp
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 AT&T Corp filed Critical AT&T Corp
Application granted granted Critical
Publication of DE69231317D1 publication Critical patent/DE69231317D1/de
Publication of DE69231317T2 publication Critical patent/DE69231317T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation
    • H04B14/046—Systems or methods for reducing noise or bandwidth
    • 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
    • H03M3/458—Analogue/digital converters using delta-sigma modulation as an intermediate step

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Analogue/Digital Conversion (AREA)
DE69231317T 1991-05-21 1992-05-20 Sigma-delta Modulator Expired - Fee Related DE69231317T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/703,527 US5144308A (en) 1991-05-21 1991-05-21 Idle channel tone and periodic noise suppression for sigma-delta modulators using high-level dither

Publications (2)

Publication Number Publication Date
DE69231317D1 DE69231317D1 (de) 2000-09-07
DE69231317T2 true DE69231317T2 (de) 2000-12-28

Family

ID=24825739

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69215271T Expired - Fee Related DE69215271T2 (de) 1991-05-21 1992-05-20 Unterdrückung von Ton und periodischem Geräusch in einem leerlaufenden Kanal für Sigma-Delta-Modulatoren unter Verwendung eines hochpegeligen Zittersignals
DE69231317T Expired - Fee Related DE69231317T2 (de) 1991-05-21 1992-05-20 Sigma-delta Modulator

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE69215271T Expired - Fee Related DE69215271T2 (de) 1991-05-21 1992-05-20 Unterdrückung von Ton und periodischem Geräusch in einem leerlaufenden Kanal für Sigma-Delta-Modulatoren unter Verwendung eines hochpegeligen Zittersignals

Country Status (6)

Country Link
US (1) US5144308A (de)
EP (2) EP0709969B1 (de)
JP (1) JPH0793582B2 (de)
KR (1) KR950010212B1 (de)
DE (2) DE69215271T2 (de)
HK (1) HK42997A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006007022B4 (de) * 2006-02-15 2012-09-27 Texas Instruments Deutschland Gmbh Volldigitales PLL-System (ADPLL-System)

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US5457456A (en) * 1993-12-16 1995-10-10 At&T Ipm Corp. Data converter with programmable decimation or interpolation factor
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US5408235A (en) * 1994-03-07 1995-04-18 Intel Corporation Second order Sigma-Delta based analog to digital converter having superior analog components and having a programmable comb filter coupled to the digital signal processor
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US6867720B1 (en) 1997-10-06 2005-03-15 The Regents Of The University Of Michigan Beamformed ultrasonic imager with delta-sigma feedback control
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US6351229B1 (en) * 2000-09-05 2002-02-26 Texas Instruments Incorporated Density-modulated dynamic dithering circuits and method for delta-sigma converter
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US7058463B1 (en) 2000-12-29 2006-06-06 Nokia Corporation Method and apparatus for implementing a class D driver and speaker system
JP2002247683A (ja) * 2001-02-02 2002-08-30 Techtronic As 内部ａ／ｄ変換器を備えたマイクロホン
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US6445318B1 (en) * 2001-04-05 2002-09-03 Nokia Mobile Phones, Ltd. Method and apparatus for providing signal dependent dither generator for sigma-delta modulator
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US6577258B2 (en) 2001-10-01 2003-06-10 Nokia Corporation Adaptive sigma-delta data converter for mobile terminals
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US6710729B1 (en) * 2002-10-10 2004-03-23 Faraday Technology Corp. Idle channel tone and periodic noise suppression for sigma-delta modulator using feedback-quantizer
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US6880262B1 (en) * 2003-09-30 2005-04-19 Broadcom Corporation Continuous time ΔΣ ADC with dithering
US20050162295A1 (en) * 2004-01-27 2005-07-28 Victor Dias Analog-to-digital converter comprising a sigma-delta modulator
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CN107276590B (zh) * 2017-05-15 2020-07-28 南京中感微电子有限公司 一种信号处理方法及系统
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Publication number Priority date Publication date Assignee Title
DE102006007022B4 (de) * 2006-02-15 2012-09-27 Texas Instruments Deutschland Gmbh Volldigitales PLL-System (ADPLL-System)

Also Published As

Publication number Publication date
EP0515154A1 (de) 1992-11-25
EP0709969A2 (de) 1996-05-01
DE69215271T2 (de) 1997-06-05
EP0709969A3 (de) 1996-05-08
KR920022692A (ko) 1992-12-19
DE69231317D1 (de) 2000-09-07
JPH05160736A (ja) 1993-06-25
JPH0793582B2 (ja) 1995-10-09
US5144308A (en) 1992-09-01
DE69215271D1 (de) 1997-01-02
HK42997A (en) 1997-04-11
EP0515154B1 (de) 1996-11-20
EP0709969B1 (de) 2000-08-02
KR950010212B1 (ko) 1995-09-11

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