JP2001223590A - パルス幅変調（ｐｗｍ）信号をノイズ・シェーピングするための装置およびその方法 - Google Patents

パルス幅変調（ｐｗｍ）信号をノイズ・シェーピングするための装置およびその方法

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Publication number
JP2001223590A
JP2001223590A JP2001000172A JP2001000172A JP2001223590A JP 2001223590 A JP2001223590 A JP 2001223590A JP 2001000172 A JP2001000172 A JP 2001000172A JP 2001000172 A JP2001000172 A JP 2001000172A JP 2001223590 A JP2001223590 A JP 2001223590A
Authority
JP
Japan
Prior art keywords
noise shaping
signal
output
digital signal
pwm
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.)
Pending
Application number
JP2001000172A
Other languages
English (en)
Japanese (ja)
Other versions
JP2001223590A5 (https=
Inventor
Media Parab
パラブ・ミディア
R Miller Matthew
マシュー・アール・ミラー
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.)
Motorola Solutions Inc
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Publication of JP2001223590A publication Critical patent/JP2001223590A/ja
Publication of JP2001223590A5 publication Critical patent/JP2001223590A5/ja
Pending 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
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3002—Conversion to or from differential modulation
    • H03M7/3004—Digital delta-sigma modulation
    • H03M7/3006—Compensating for, or preventing of, undesired influence of physical parameters
    • 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
    • H03M3/50—Digital/analogue converters using delta-sigma modulation as an intermediate step
    • H03M3/502—Details of the final digital/analogue conversion following the digital delta-sigma modulation
    • H03M3/506—Details of the final digital/analogue conversion following the digital delta-sigma modulation the final digital/analogue converter being constituted by a pulse width modulator
    • 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
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3002—Conversion to or from differential modulation
    • H03M7/3004—Digital delta-sigma modulation
    • H03M7/3015—Structural details of digital delta-sigma modulators
    • H03M7/3031—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path
    • H03M7/3033—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator having a higher order loop filter in the feedforward path, e.g. with distributed feedforward inputs
    • H03M7/3037—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator having a higher order loop filter in the feedforward path, e.g. with distributed feedforward inputs with weighted feedforward summation, i.e. with feedforward paths from more than one filter stage to the quantiser input

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
JP2001000172A 2000-01-05 2001-01-04 パルス幅変調（ｐｗｍ）信号をノイズ・シェーピングするための装置およびその方法 Pending JP2001223590A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/478013 2000-01-05
US09/478,013 US6414613B1 (en) 2000-01-05 2000-01-05 Apparatus for noise shaping a pulse width modulation (PWM) signal and method therefor

Publications (2)

Publication Number Publication Date
JP2001223590A true JP2001223590A (ja) 2001-08-17
JP2001223590A5 JP2001223590A5 (https=) 2008-02-07

Family

ID=23898191

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001000172A Pending JP2001223590A (ja) 2000-01-05 2001-01-04 パルス幅変調（ｐｗｍ）信号をノイズ・シェーピングするための装置およびその方法

Country Status (2)

Country Link
US (1) US6414613B1 (https=)
JP (1) JP2001223590A (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
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JP2005513810A (ja) * 2002-01-02 2005-05-12 ビ−エイイ−　システムズ　パブリック　リミテッド　カンパニ− 電流コントローラの動作に関する改良

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US6791404B1 (en) 1999-07-01 2004-09-14 Broadcom Corporation Method and apparatus for efficient mixed signal processing in a digital amplifier
US6995482B2 (en) * 2000-01-05 2006-02-07 Freescale Semiconductor, Inc. Switching circuit and method therefor
US6681054B1 (en) * 2000-05-01 2004-01-20 Eastman Kodak Company Noise reduction method utilizing probabilistic weighting, apparatus, and program for digital image processing
KR100365136B1 (ko) * 2000-06-23 2003-01-24 네오피델리티 주식회사 실계수 디지털 잡음성형필터 및 그 제조방법
US7200187B2 (en) * 2001-07-26 2007-04-03 O'brien Thomas J Modulator for digital amplifier
WO2003030373A1 (en) * 2001-09-28 2003-04-10 Sony Corporation Delta-sigma modulation apparatus and signal amplification apparatus
US6549085B1 (en) * 2001-11-27 2003-04-15 Motorola, Inc. Natural sampling method and device for RF pulse-width modulation
US6606044B2 (en) * 2002-01-02 2003-08-12 Motorola, Inc. Method and apparatus for generating a pulse width modulated signal
US7493179B2 (en) * 2002-03-25 2009-02-17 Freescale Semiconductor, Inc. Digital audio system and method therefor
US7142597B2 (en) * 2002-09-26 2006-11-28 Freescale Semiconductor, Inc. Full bridge integral noise shaping for quantization of pulse width modulation signals
US6727832B1 (en) * 2002-11-27 2004-04-27 Cirrus Logic, Inc. Data converters with digitally filtered pulse width modulation output stages and methods and systems using the same
DE10337782B4 (de) * 2003-07-14 2007-03-01 Micronas Gmbh Methode und Schaltung zur effektiven Konvertierung von PCM-in PWM-Daten
US6922100B2 (en) * 2003-07-29 2005-07-26 Freescale Semiconductor, Inc. Method and apparatus for switching amplification having variable sample point and variable order correction
WO2005018089A1 (en) * 2003-08-18 2005-02-24 Koninklijke Philips Electronics N. V. Audio power amplifier
US7130346B2 (en) * 2004-05-14 2006-10-31 Freescale Semiconductor, Inc. Method and apparatus having a digital PWM signal generator with integral noise shaping
GB0420508D0 (en) * 2004-09-15 2004-10-20 Koninkl Philips Electronics Nv Pulse width modulated noise shaper and related method
EP1653605B1 (en) * 2004-10-28 2011-08-03 CAMCO Produktions- und Vertriebs GmbH Noise shaper for shaping a power spectral density of an error signal and method therefor
US7227487B1 (en) * 2005-11-14 2007-06-05 Freescale Semiconductor, Inc. Digital saturation handling in integral noise shaping of pulse width modulation
US20070115157A1 (en) * 2005-11-21 2007-05-24 Zhuan Ye Method and system for generation of double-sided pulse wave modulation signal
US7576604B2 (en) * 2006-12-15 2009-08-18 Bin Xu All-digital class-D audio amplifier
US8306245B2 (en) * 2007-05-25 2012-11-06 Marvell World Trade Ltd. Multi-mode audio amplifiers
US7746256B2 (en) * 2007-10-05 2010-06-29 Infineon Technologies Ag Analog to digital conversion using irregular sampling
US7859442B2 (en) * 2007-10-05 2010-12-28 Jorg Daniels Asynchronous sigma delta analog to digital converter using a time to digital converter
US7659842B2 (en) * 2007-10-24 2010-02-09 Infineon Technologies Ag Quantization error reduction in PWM full-MASH converters
US7535393B1 (en) * 2007-10-24 2009-05-19 Infineon Technologies Ag Sampling error reduction in PWM-MASH converters
NL1035333C2 (nl) * 2008-04-23 2009-10-26 Hypex Electronics B V Werkwijze en stuurschakeling voor het sturen van pulsbreedtemodulatie.
US7777563B2 (en) * 2008-12-18 2010-08-17 Freescale Semiconductor, Inc. Spread spectrum pulse width modulation method and apparatus
US9106214B1 (en) 2013-07-05 2015-08-11 Adx Research, Inc. PCM to digital PWM using predistortion
US9626981B2 (en) * 2014-06-25 2017-04-18 Cirrus Logic, Inc. Systems and methods for compressing a digital signal
CN115395956B (zh) * 2022-08-12 2026-02-03 矽源半导体(福建)有限公司 利用扰动处理sar-adc量化误差校正的方法和系统

Citations (5)

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JPS6339216A (ja) * 1986-08-04 1988-02-19 Oki Electric Ind Co Ltd デルタ・シグマ形ａ／ｄ変換器
JPH08330967A (ja) * 1995-06-01 1996-12-13 Matsushita Electric Ind Co Ltd デルタ・シグマ変調回路
JPH09121161A (ja) * 1995-07-28 1997-05-06 At & T Ipm Corp ディザを利用してシグマ・デルタ変調器の安定性を改善する方法
JPH10209874A (ja) * 1997-01-17 1998-08-07 Sony Corp アナログ−ディジタル変換器
JPH10242864A (ja) * 1997-02-26 1998-09-11 Hitachi Ltd Ｄ／ａ変換器及び半導体集積回路

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US4977403A (en) * 1988-07-29 1990-12-11 Hughes Aircraft Company Digital correction circuit for data converters
GB9318238D0 (en) * 1993-09-02 1993-10-20 B & W Loudspeakers Digital converter
US5933106A (en) * 1997-07-11 1999-08-03 California Institute Of Technology Encoder signal analysis system for high-resolution position measurement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6339216A (ja) * 1986-08-04 1988-02-19 Oki Electric Ind Co Ltd デルタ・シグマ形ａ／ｄ変換器
JPH08330967A (ja) * 1995-06-01 1996-12-13 Matsushita Electric Ind Co Ltd デルタ・シグマ変調回路
JPH09121161A (ja) * 1995-07-28 1997-05-06 At & T Ipm Corp ディザを利用してシグマ・デルタ変調器の安定性を改善する方法
JPH10209874A (ja) * 1997-01-17 1998-08-07 Sony Corp アナログ−ディジタル変換器
JPH10242864A (ja) * 1997-02-26 1998-09-11 Hitachi Ltd Ｄ／ａ変換器及び半導体集積回路

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005513810A (ja) * 2002-01-02 2005-05-12 ビ−エイイ−　システムズ　パブリック　リミテッド　カンパニ− 電流コントローラの動作に関する改良

Also Published As

Publication number Publication date
US6414613B1 (en) 2002-07-02

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