AU2003274786A1 - Digital audio amplifier capable of increasing self-oscillation frequency and reducing the number of component - Google Patents

Digital audio amplifier capable of increasing self-oscillation frequency and reducing the number of component

Info

Publication number
AU2003274786A1
AU2003274786A1 AU2003274786A AU2003274786A AU2003274786A1 AU 2003274786 A1 AU2003274786 A1 AU 2003274786A1 AU 2003274786 A AU2003274786 A AU 2003274786A AU 2003274786 A AU2003274786 A AU 2003274786A AU 2003274786 A1 AU2003274786 A1 AU 2003274786A1
Authority
AU
Australia
Prior art keywords
reducing
component
digital audio
oscillation frequency
audio amplifier
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.)
Abandoned
Application number
AU2003274786A
Inventor
Byung-Tak Jang
Tae-Ha Ryoo
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.)
DMB Tech Co Ltd
Original Assignee
DMB Tech Co Ltd
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 DMB Tech Co Ltd filed Critical DMB Tech Co Ltd
Publication of AU2003274786A1 publication Critical patent/AU2003274786A1/en
Abandoned 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
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
    • H03F3/185—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only with field-effect devices
    • 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
    • H03F3/2171—Class D power amplifiers; Switching amplifiers with field-effect devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/03—Indexing scheme relating to amplifiers the amplifier being designed for audio applications

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
AU2003274786A 2002-10-31 2003-10-30 Digital audio amplifier capable of increasing self-oscillation frequency and reducing the number of component Abandoned AU2003274786A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020020067056A KR20040038174A (en) 2002-10-31 2002-10-31 Digital audio amplifier capable of increasing self-oscillation frequency and reducing the number of component
KR10-2002-0067056 2002-10-31
PCT/KR2003/002306 WO2004040752A1 (en) 2002-10-31 2003-10-30 Digital audio amplifier capable of increasing self-oscillation frequency and reducing the number of component

Publications (1)

Publication Number Publication Date
AU2003274786A1 true AU2003274786A1 (en) 2004-05-25

Family

ID=32226219

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2003274786A Abandoned AU2003274786A1 (en) 2002-10-31 2003-10-30 Digital audio amplifier capable of increasing self-oscillation frequency and reducing the number of component

Country Status (3)

Country Link
KR (1) KR20040038174A (en)
AU (1) AU2003274786A1 (en)
WO (1) WO2004040752A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100593910C (en) * 2008-01-11 2010-03-10 清华大学 A low power consumption comparator with mistuning calibration function
JP6227890B2 (en) * 2012-05-02 2017-11-08 株式会社半導体エネルギー研究所 Signal processing circuit and control circuit
GB2564912B (en) 2017-07-24 2020-09-02 Cirrus Logic Int Semiconductor Ltd Transducer driver circuitry

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100215394B1 (en) * 1996-09-02 1999-08-16 양계승 Triple negative feedback d-class audio amplifier
KR100226227B1 (en) * 1997-03-18 1999-10-15 윤덕용 Self-oscillation type delta modulation d-type audio amplifier
US6229389B1 (en) * 1998-11-18 2001-05-08 Intersil Corporation Class D modulator with peak current limit and load impedance sensing circuits
TW501354B (en) * 1999-05-25 2002-09-01 Sony Corp Digital signal processing device and method, digital signal processing system
US6362683B1 (en) * 1999-07-29 2002-03-26 Tripath Technology, Inc. Break-before-make distortion compensation for a digital amplifier
US6297693B1 (en) * 1999-12-23 2001-10-02 Red Chip Company Limited Techniques for synchronizing a self oscillating variable frequency modulator to an external clock
JP3398113B2 (en) * 2000-02-14 2003-04-21 ローム株式会社 Mute circuit and digital audio amplifier circuit
US6420930B1 (en) * 2000-07-12 2002-07-16 Monolithic Power Systems, Inc. Class D audio amplifier
KR20020019630A (en) * 2000-08-12 2002-03-13 주진혁 Digital power amplifier adopting the Sigma-Delta type and method thereof
JP4251769B2 (en) * 2000-11-15 2009-04-08 ヤマハ株式会社 Digital audio amplifier

Also Published As

Publication number Publication date
WO2004040752A1 (en) 2004-05-13
KR20040038174A (en) 2004-05-08

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase