JP2005506727A - 信号処理回路 - Google Patents

信号処理回路 Download PDF

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Publication number
JP2005506727A
JP2005506727A JP2002586495A JP2002586495A JP2005506727A JP 2005506727 A JP2005506727 A JP 2005506727A JP 2002586495 A JP2002586495 A JP 2002586495A JP 2002586495 A JP2002586495 A JP 2002586495A JP 2005506727 A JP2005506727 A JP 2005506727A
Authority
JP
Japan
Prior art keywords
signal
stage
integration
processing circuit
output
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
JP2002586495A
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English (en)
Japanese (ja)
Other versions
JP2005506727A5 (enExample
Inventor
ロバート・デイビッド・ワッツ
ジョン・アレキサンダー・ウエストレイク
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.)
John Alexander Westlake
Robert David Watts
Original Assignee
John Alexander Westlake
Robert David Watts
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 John Alexander Westlake, Robert David Watts filed Critical John Alexander Westlake
Publication of JP2005506727A publication Critical patent/JP2005506727A/ja
Publication of JP2005506727A5 publication Critical patent/JP2005506727A5/ja
Pending legal-status Critical Current

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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
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/331—Sigma delta modulation being used in an amplifying circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Selective Calling Equipment (AREA)
  • Stereo-Broadcasting Methods (AREA)
JP2002586495A 2001-04-27 2002-04-22 信号処理回路 Pending JP2005506727A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0110340.7A GB0110340D0 (en) 2001-04-27 2001-04-27 A signal processing circuit
PCT/GB2002/001815 WO2002089321A1 (en) 2001-04-27 2002-04-22 A signal processing circuit

Publications (2)

Publication Number Publication Date
JP2005506727A true JP2005506727A (ja) 2005-03-03
JP2005506727A5 JP2005506727A5 (enExample) 2005-12-22

Family

ID=9913570

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002586495A Pending JP2005506727A (ja) 2001-04-27 2002-04-22 信号処理回路

Country Status (7)

Country Link
US (1) US7046080B2 (enExample)
EP (1) EP1384317B1 (enExample)
JP (1) JP2005506727A (enExample)
AT (1) ATE299310T1 (enExample)
DE (1) DE60204960D1 (enExample)
GB (1) GB0110340D0 (enExample)
WO (1) WO2002089321A1 (enExample)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10327620B4 (de) * 2003-01-31 2014-09-11 Lantiq Deutschland Gmbh Vorrichtung und Verfahren zur digitalen Pulsweiten-Modulation
SE0300780D0 (sv) * 2003-03-24 2003-03-24 Bang & Olufsen Icepower As Digital pulse width controlled oscillation modulator
US7038535B2 (en) * 2003-03-29 2006-05-02 Wai Laing Lee PWM digital amplifier with high-order loop filter
US6847257B2 (en) * 2003-05-23 2005-01-25 Maxim Integrated Products, Inc. Efficient minimum pulse spread spectrum modulation for filterless class D amplifiers
US20040232978A1 (en) * 2003-05-23 2004-11-25 Easson Craig Alexander Filterless class D amplifiers using spread spectrum PWM modulation
US7271650B2 (en) * 2004-03-26 2007-09-18 Asp Technologies PWM digital amplifier with high-order loop filter
JP4622423B2 (ja) * 2004-09-29 2011-02-02 日本テキサス・インスツルメンツ株式会社 パルス幅変調信号発生回路
GB2419757B (en) 2004-11-01 2008-11-26 Zetex Plc A digital amplifier
WO2008033116A1 (en) * 2006-09-11 2008-03-20 Semiconductor Components Industries, L.L.C. Amplification circuit and method therefor
US7714675B2 (en) * 2006-12-05 2010-05-11 Broadcom Corporation All digital Class-D modulator and its saturation protection techniques
US8022756B2 (en) 2007-05-15 2011-09-20 Qualcomm, Incorporated Output circuits with class D amplifier
US8046192B2 (en) * 2008-02-29 2011-10-25 Smurfit-Stone Container Enterprises, Inc. Baler machine monitoring and performance interfaces, systems and methods
US7791521B2 (en) * 2008-04-01 2010-09-07 Silicon Laboratories, Inc. System and method of changing a PWM power spectrum
US7701307B2 (en) * 2008-04-01 2010-04-20 Silicon Laboratories, Inc. System and method of changing a PWM power spectrum
US7598895B1 (en) * 2008-04-01 2009-10-06 Silicon Laboratories, Inc. System and method of altering a PWM carrier power spectrum
US8971444B2 (en) * 2009-08-05 2015-03-03 Rajendra Kumar Generalized frequency modulation
US8130128B2 (en) 2010-03-30 2012-03-06 Silicon Laboratores Inc. System and method for generating shaped noise
JP6510199B2 (ja) * 2014-08-19 2019-05-08 ローム株式会社 スイッチング回路、オーディオアンプ集積回路、電子機器、電気音響変換素子の駆動方法
US10797659B2 (en) * 2018-10-15 2020-10-06 Semiconductor Components Industried, Llc Audio amplifier having multiple sigma-delta modulators to drive an output load

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57170606A (en) * 1981-04-10 1982-10-20 Sony Corp Amplifying circuit for pulse-width-modulated signal
JPS6369465A (ja) 1986-09-05 1988-03-29 Toshiba Corp 電力変換器用のスイツチング信号発生方法
US4843339A (en) * 1987-10-28 1989-06-27 Burr-Brown Corporation Isolation amplifier including precision voltage-to-duty-cycle converter and low ripple, high bandwidth charge balance demodulator
JPH0785524B2 (ja) * 1988-12-28 1995-09-13 パイオニア株式会社 パルス幅変調増幅回路
US5218315A (en) * 1992-01-06 1993-06-08 Infinity Systems, Inc. Switching amplifier
US5352986A (en) 1993-01-22 1994-10-04 Digital Fidelity, Inc. Closed loop power controller
DE69418371T2 (de) 1993-03-17 1999-10-21 Kabushiki Kaisha Toshiba, Kawasaki Schaltung zur Pulsweitenmodulation
DE19619208A1 (de) * 1996-05-11 1997-11-13 Klugbauer Heilmeier Josef Digitaler Verstärker
US5777512A (en) 1996-06-20 1998-07-07 Tripath Technology, Inc. Method and apparatus for oversampled, noise-shaping, mixed-signal processing
US5805020A (en) * 1996-06-27 1998-09-08 Harris Corporation Silent start class D amplifier
WO1998019391A2 (en) * 1996-10-31 1998-05-07 Bang & Olufsen A/S Pulse modulation power amplifier with enhanced cascade control method
EP0968565A2 (en) 1998-01-22 2000-01-05 Koninklijke Philips Electronics N.V. Pwm amplifier
US6064259A (en) * 1998-07-24 2000-05-16 Nikon Corporation Of America High power, high performance pulse width modulation amplifier
EP1049247B1 (en) * 1999-04-27 2005-08-03 STMicroelectronics S.r.l. Class-D amplifier with enhanced bandwidth
US7038535B2 (en) * 2003-03-29 2006-05-02 Wai Laing Lee PWM digital amplifier with high-order loop filter

Also Published As

Publication number Publication date
GB0110340D0 (en) 2001-06-20
US20050054307A1 (en) 2005-03-10
ATE299310T1 (de) 2005-07-15
WO2002089321A1 (en) 2002-11-07
EP1384317B1 (en) 2005-07-06
DE60204960D1 (de) 2005-08-11
US7046080B2 (en) 2006-05-16
EP1384317A1 (en) 2004-01-28

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