DE60123520D1 - Digitalschaltverstärker - Google Patents

Digitalschaltverstärker

Info

Publication number
DE60123520D1
DE60123520D1 DE60123520T DE60123520T DE60123520D1 DE 60123520 D1 DE60123520 D1 DE 60123520D1 DE 60123520 T DE60123520 T DE 60123520T DE 60123520 T DE60123520 T DE 60123520T DE 60123520 D1 DE60123520 D1 DE 60123520D1
Authority
DE
Germany
Prior art keywords
switching amplifier
digital switching
digital
amplifier
switching
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 - Lifetime
Application number
DE60123520T
Other languages
English (en)
Other versions
DE60123520T2 (de
Inventor
Masahiro Kishida
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Application granted granted Critical
Publication of DE60123520D1 publication Critical patent/DE60123520D1/de
Publication of DE60123520T2 publication Critical patent/DE60123520T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • 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
    • H03M3/352—Continuously compensating for, or preventing, undesired influence of physical parameters of deviations from the desired transfer characteristic
    • H03M3/354—Continuously compensating for, or preventing, undesired influence of physical parameters of deviations from the desired transfer characteristic at one point, i.e. by adjusting a single reference value, e.g. bias or gain error
    • H03M3/356—Offset or drift compensation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/331—Sigma delta modulation being used in an amplifying circuit
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
DE60123520T 2000-05-22 2001-05-16 Digitalschaltverstärker Expired - Lifetime DE60123520T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000149603A JP3576461B2 (ja) 2000-05-22 2000-05-22 ディジタルスイッチング増幅器
JP2000149603 2000-05-22

Publications (2)

Publication Number Publication Date
DE60123520D1 true DE60123520D1 (de) 2006-11-16
DE60123520T2 DE60123520T2 (de) 2007-08-23

Family

ID=18655436

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60123520T Expired - Lifetime DE60123520T2 (de) 2000-05-22 2001-05-16 Digitalschaltverstärker

Country Status (4)

Country Link
US (1) US6700518B2 (de)
EP (1) EP1158663B1 (de)
JP (1) JP3576461B2 (de)
DE (1) DE60123520T2 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0104403D0 (sv) * 2001-12-21 2001-12-21 Bang & Olufsen Powerhouse As Attenuation control for digital power converters
JP2005167464A (ja) * 2003-12-01 2005-06-23 Pioneer Electronic Corp 増幅装置
JP2006173819A (ja) * 2004-12-14 2006-06-29 Sharp Corp スイッチングアンプ
US7728659B2 (en) * 2005-01-28 2010-06-01 Nxp B.V. Arrangement for amplifying a PWM input signal
EP1847014A1 (de) 2005-01-31 2007-10-24 Freescale Semiconductor Inc. Audiokommunikationseinheit und integrierte schaltung
US7227487B1 (en) * 2005-11-14 2007-06-05 Freescale Semiconductor, Inc. Digital saturation handling in integral noise shaping of pulse width modulation
JP4893201B2 (ja) * 2006-09-28 2012-03-07 株式会社Ｊｖｃケンウッド Ｄ級増幅装置及び方法
US8224009B2 (en) 2007-03-02 2012-07-17 Bose Corporation Audio system with synthesized positive impedance
KR101593438B1 (ko) * 2009-09-16 2016-02-12 삼성전자주식회사 하프-브리지 3-레벨 펄스폭 변조 증폭기, 이의 구동 방법 및 오디오 처리 장치
WO2011064787A1 (en) * 2009-11-30 2011-06-03 ST-Ericsson India Pvt. Ltd. Pop-up noise reduction in a device
US9450548B2 (en) 2011-03-14 2016-09-20 Samsung Electronics Co., Ltd. Method and apparatus for outputting audio signal
JP5547217B2 (ja) * 2012-01-25 2014-07-09 株式会社東芝 増幅回路
EP2937991B1 (de) 2012-12-22 2019-02-20 Schaft Inc. Vorrichtung zur spannungsregelung eines motorantriebs und verfahren zur spannungsregelung eines motorantriebs
JP6197824B2 (ja) * 2015-04-17 2017-09-20 オンキヨー株式会社 信号変調回路
US11088662B2 (en) 2017-07-13 2021-08-10 Sharp Kabushiki Kaisha Digital amplifier and output device
US10690730B2 (en) * 2018-06-07 2020-06-23 Cirrus Logic, Inc. Apparatus and method for reducing offsets and 1/f noise
US11012043B2 (en) 2019-08-19 2021-05-18 Cirrus Logic, Inc. Hybrid autozeroing and chopping offset cancellation for switched-capacitor circuits

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0787377B2 (ja) 1988-04-26 1995-09-20 松下電器産業株式会社 デルタ変調器
JPH0787378B2 (ja) 1988-05-17 1995-09-20 松下電器産業株式会社 デルタ変調器
WO2000008765A2 (en) * 1998-08-06 2000-02-17 Steensgaard Madsen Jesper Delta-sigma a/d converter
US6316992B1 (en) * 1999-07-29 2001-11-13 Tripath Technology, Inc. DC offset calibration for a digital switching amplifier
JP3625169B2 (ja) * 2000-01-27 2005-03-02 シャープ株式会社 ディジタルスイッチングアンプ

Also Published As

Publication number Publication date
EP1158663A3 (de) 2004-05-26
JP2001332939A (ja) 2001-11-30
US20010043152A1 (en) 2001-11-22
JP3576461B2 (ja) 2004-10-13
EP1158663B1 (de) 2006-10-04
DE60123520T2 (de) 2007-08-23
EP1158663A2 (de) 2001-11-28
US6700518B2 (en) 2004-03-02

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition