JP2005509338A5 - - Google Patents

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Publication number
JP2005509338A5
JP2005509338A5 JP2003525986A JP2003525986A JP2005509338A5 JP 2005509338 A5 JP2005509338 A5 JP 2005509338A5 JP 2003525986 A JP2003525986 A JP 2003525986A JP 2003525986 A JP2003525986 A JP 2003525986A JP 2005509338 A5 JP2005509338 A5 JP 2005509338A5
Authority
JP
Japan
Prior art keywords
switching
signal
switching signal
input
circuit
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.)
Granted
Application number
JP2003525986A
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English (en)
Japanese (ja)
Other versions
JP4210594B2 (ja
JP2005509338A (ja
Filing date
Publication date
Priority claimed from US09/943,177 external-priority patent/US6605991B2/en
Application filed filed Critical
Publication of JP2005509338A publication Critical patent/JP2005509338A/ja
Publication of JP2005509338A5 publication Critical patent/JP2005509338A5/ja
Application granted granted Critical
Publication of JP4210594B2 publication Critical patent/JP4210594B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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JP2003525986A 2001-08-30 2002-08-13 差動出力スイッチング増幅器においてヌルスペクトルを生成するための回路及びその方法 Expired - Fee Related JP4210594B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/943,177 US6605991B2 (en) 2001-08-30 2001-08-30 Circuitry for creating a spectral null in a differential output switching amplifier and method therefor
PCT/US2002/025905 WO2003021770A1 (en) 2001-08-30 2002-08-13 Circuitry for creating a spectral null in a differential output switching amplifier and method therefor

Publications (3)

Publication Number Publication Date
JP2005509338A JP2005509338A (ja) 2005-04-07
JP2005509338A5 true JP2005509338A5 (enExample) 2005-12-22
JP4210594B2 JP4210594B2 (ja) 2009-01-21

Family

ID=25479210

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003525986A Expired - Fee Related JP4210594B2 (ja) 2001-08-30 2002-08-13 差動出力スイッチング増幅器においてヌルスペクトルを生成するための回路及びその方法

Country Status (6)

Country Link
US (1) US6605991B2 (enExample)
EP (1) EP1423912A1 (enExample)
JP (1) JP4210594B2 (enExample)
KR (1) KR100939447B1 (enExample)
TW (1) TWI240484B (enExample)
WO (1) WO2003021770A1 (enExample)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI326967B (en) * 2002-03-11 2010-07-01 California Inst Of Techn Differential amplifier
EP1361656B1 (en) * 2002-05-10 2008-02-13 Texas Instruments Incorporated Method and device to prevent power-on audio output noise in a wireless telephone handset
EP1376857B1 (en) * 2002-06-14 2005-03-30 Nokia Corporation Electronic circuit for a switching power amplifier and method for switching the output stage of a switching power amplifier
WO2004017513A1 (en) * 2002-08-14 2004-02-26 Dspfactory Sa Amplifier
JP4136580B2 (ja) * 2002-10-02 2008-08-20 アルプス電気株式会社 送信器用増幅回路
US7729790B1 (en) * 2003-03-21 2010-06-01 D2Audio Corporation Phase alignment of audio output data in a multi-channel configuration
US7929718B1 (en) 2003-05-12 2011-04-19 D2Audio Corporation Systems and methods for switching and mixing signals in a multi-channel amplifier
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
US7515072B2 (en) 2003-09-25 2009-04-07 International Rectifier Corporation Method and apparatus for converting PCM to PWM
US7308027B1 (en) * 2004-04-21 2007-12-11 Cirrus Logic, Inc. Circuits and methods for reducing distortion and noise in pulse width modulation systems utilizing full-bridge drivers
US7130346B2 (en) * 2004-05-14 2006-10-31 Freescale Semiconductor, Inc. Method and apparatus having a digital PWM signal generator with integral noise shaping
US7161423B2 (en) * 2004-06-30 2007-01-09 Silicon Laboratories Inc. Parallel power amplifier and associated methods
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
GB2449591B (en) * 2005-01-17 2009-03-18 Wolfson Microelectronics Plc Pulse width modulator quantisation circuit
DE102005006858A1 (de) * 2005-02-15 2006-09-07 Siemens Audiologische Technik Gmbh Hörhilfegerät mit einem Ausgangsverstärker, der einen Sigma-Delta-Modulator umfasst
US7403066B2 (en) 2005-11-10 2008-07-22 Motorola, Inc. Method and system for creating a spectral null in a switching amplifier
JP4587222B2 (ja) * 2005-11-29 2010-11-24 ローム株式会社 Ｄ級アンプ及びこれを備えた音響機器
JP5096710B2 (ja) * 2006-08-29 2012-12-12 パナソニック株式会社 デジタルアンプ装置
DE102007018121B4 (de) * 2007-04-16 2012-12-06 Siemens Medical Instruments Pte. Ltd. Hörvorrichtung mit störarmer Höreransteuerung und entsprechendes Verfahren sowie Hörsystem
US8520881B2 (en) * 2007-04-16 2013-08-27 Siemens Medical Instruments Pte. Ltd. Hearing apparatus with low-interference receiver control and corresponding method
JP4905234B2 (ja) * 2007-04-17 2012-03-28 ヤマハ株式会社 Ｄ級アンプ
KR101169912B1 (ko) 2011-03-15 2012-08-06 주식회사 동부하이텍 대칭 신호 출력 장치 및 증폭기 회로 장치
US8310305B1 (en) * 2011-04-14 2012-11-13 Rockwell Collins, Inc. Tapered-impedance distributed switching power amplifiers
EP2573938A1 (en) * 2011-09-22 2013-03-27 Alcatel Lucent A method for signal amplification based on pulse width modulation
CN102684701B (zh) * 2012-04-27 2014-07-09 苏州上声电子有限公司 基于编码转换的数字扬声器驱动方法和装置
JP6249204B2 (ja) * 2013-04-22 2017-12-20 国立大学法人 名古屋工業大学 パルス幅変調信号生成器およびフルデジタルアンプおよびデジタル−アナログ変換器
US8988049B2 (en) 2013-06-19 2015-03-24 Futurewei Technologies, Inc. Multiple switch power stage control tracking PCM signal input
US9014300B2 (en) 2013-09-12 2015-04-21 Qualcomm Incorporated Switched-mode high-linearity transmitter using pulse width modulation
JP7741804B2 (ja) * 2020-07-21 2025-09-18 ソニーセミコンダクタソリューションズ株式会社 電子機器、および電気音響変換装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4164714A (en) 1977-09-26 1979-08-14 Harris Corporation Polyphase PDM amplifier
US4272713A (en) * 1979-10-30 1981-06-09 Pritchard Eric K Switching transconductance amplifier for inductive loads
JPH02177605A (ja) 1988-12-28 1990-07-10 Pioneer Electron Corp パルス幅変調増幅回路
US5077539A (en) 1990-12-26 1991-12-31 Apogee Technology, Inc. Switching amplifier
KR960002004B1 (ko) * 1991-02-19 1996-02-09 가부시키가이샤 도시바 기록검증 제어회로를 갖춘 전기적으로 소거 및 프로그램가능한 독출전용 기억장치
US5398003A (en) 1994-03-30 1995-03-14 Apple Computer, Inc. Pulse width modulation speaker amplifier
US5617058A (en) * 1995-11-13 1997-04-01 Apogee Technology, Inc. Digital signal processing for linearization of small input signals to a tri-state power switch
US5818260A (en) * 1996-04-24 1998-10-06 National Semiconductor Corporation Transmission line driver having controllable rise and fall times with variable output low and minimal on/off delay
US5973368A (en) * 1996-06-05 1999-10-26 Pearce; Lawrence G. Monolithic class D amplifier
JP3878320B2 (ja) * 1998-03-25 2007-02-07 株式会社ルネサステクノロジ 出力回路、パルス幅変調回路および半導体集積回路
US6111431A (en) * 1998-05-14 2000-08-29 National Semiconductor Corporation LVDS driver for backplane applications
JP2000031810A (ja) * 1998-07-10 2000-01-28 Fujitsu Ltd ドライバ回路
WO2000007291A2 (en) 1998-07-24 2000-02-10 Toccata Technology Aps A method of attenuating zero crossing distortion and noise in an amplifier, an amplifier and uses of the method and the amplifier
US6262616B1 (en) * 1999-10-08 2001-07-17 Cirrus Logic, Inc. Open loop supply independent digital/logic delay circuit

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