WO2003021770A1 - Circuitry for creating a spectral null in a differential output switching amplifier and method therefor - Google Patents
Circuitry for creating a spectral null in a differential output switching amplifier and method therefor Download PDFInfo
- Publication number
- WO2003021770A1 WO2003021770A1 PCT/US2002/025905 US0225905W WO03021770A1 WO 2003021770 A1 WO2003021770 A1 WO 2003021770A1 US 0225905 W US0225905 W US 0225905W WO 03021770 A1 WO03021770 A1 WO 03021770A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal
- switching
- input
- circuitry
- full bridge
- Prior art date
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
- H03F3/2173—Class D power amplifiers; Switching amplifiers of the bridge type
-
- 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
- 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
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/342—Pulse code modulation being used in an amplifying circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/345—Pulse density modulation being used in an amplifying circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/351—Pulse width modulation being used in an amplifying circuit
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003525986A JP4210594B2 (en) | 2001-08-30 | 2002-08-13 | Circuit and method for generating null spectrum in a differential output switching amplifier |
EP02753467A EP1423912A1 (en) | 2001-08-30 | 2002-08-13 | Circuitry for creating a spectral null in a differential output switching amplifier and method therefor |
KR1020047002929A KR100939447B1 (en) | 2001-08-30 | 2002-08-13 | Circuitry for creating a spectral null in a differential output switching amplifier and method therefor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/943,177 | 2001-08-30 | ||
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 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003021770A1 true WO2003021770A1 (en) | 2003-03-13 |
Family
ID=25479210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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 |
Country Status (6)
Country | Link |
---|---|
US (1) | US6605991B2 (en) |
EP (1) | EP1423912A1 (en) |
JP (1) | JP4210594B2 (en) |
KR (1) | KR100939447B1 (en) |
TW (1) | TWI240484B (en) |
WO (1) | WO2003021770A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004017513A1 (en) * | 2002-08-14 | 2004-02-26 | Dspfactory Sa | Amplifier |
EP1800402A2 (en) * | 2004-09-29 | 2007-06-27 | Texas Instruments Incorporated | Spread frequency spectrum waveform generating circuit |
US7515072B2 (en) | 2003-09-25 | 2009-04-07 | International Rectifier Corporation | Method and apparatus for converting PCM to PWM |
EP1983800A3 (en) * | 2007-04-16 | 2009-10-28 | Siemens Medical Instruments Pte. Ltd. | Hearing device with highly reliable earpiece control and corresponding method |
US8520881B2 (en) | 2007-04-16 | 2013-08-27 | Siemens Medical Instruments Pte. Ltd. | Hearing apparatus with low-interference receiver control and corresponding method |
Families Citing this family (23)
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 |
JP4136580B2 (en) * | 2002-10-02 | 2008-08-20 | アルプス電気株式会社 | Amplifier amplifier circuit |
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 |
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 |
GB2425668B (en) * | 2005-01-17 | 2009-02-25 | Wolfson Microelectronics Plc | Pulse width modulator quantisation circuit |
DE102005006858A1 (en) * | 2005-02-15 | 2006-09-07 | Siemens Audiologische Technik Gmbh | Hearing aid with an output amplifier comprising a sigma-delta modulator |
US7403066B2 (en) | 2005-11-10 | 2008-07-22 | Motorola, Inc. | Method and system for creating a spectral null in a switching amplifier |
JP4587222B2 (en) * | 2005-11-29 | 2010-11-24 | ローム株式会社 | Class D amplifier and audio equipment including the same |
JP5096710B2 (en) * | 2006-08-29 | 2012-12-12 | パナソニック株式会社 | Digital amplifier device |
JP4905234B2 (en) * | 2007-04-17 | 2012-03-28 | ヤマハ株式会社 | Class D amplifier |
KR101169912B1 (en) | 2011-03-15 | 2012-08-06 | 주식회사 동부하이텍 | Apparatus for output of symmetric signal and circuit apparatus for amplifier |
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 (en) * | 2012-04-27 | 2014-07-09 | 苏州上声电子有限公司 | Method and device for driving digital speaker based on code conversion |
JP6249204B2 (en) * | 2013-04-22 | 2017-12-20 | 国立大学法人 名古屋工業大学 | Pulse width modulation signal generator, full digital amplifier and digital-analog converter |
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 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4164714A (en) * | 1977-09-26 | 1979-08-14 | Harris Corporation | Polyphase PDM amplifier |
US4968948A (en) * | 1988-12-28 | 1990-11-06 | Pioneer Electronic Corporation | Pulse width modulation amplifier circuit |
US5398003A (en) * | 1994-03-30 | 1995-03-14 | Apple Computer, Inc. | Pulse width modulation speaker amplifier |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4272713A (en) * | 1979-10-30 | 1981-06-09 | Pritchard Eric K | Switching transconductance amplifier for inductive loads |
US5077539A (en) | 1990-12-26 | 1991-12-31 | Apogee Technology, Inc. | Switching amplifier |
KR960002004B1 (en) * | 1991-02-19 | 1996-02-09 | 가부시키가이샤 도시바 | Eeprom having write/verify control circuit |
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 (en) * | 1998-03-25 | 2007-02-07 | 株式会社ルネサステクノロジ | Output circuit, pulse width modulation circuit, and semiconductor integrated circuit |
US6111431A (en) * | 1998-05-14 | 2000-08-29 | National Semiconductor Corporation | LVDS driver for backplane applications |
JP2000031810A (en) * | 1998-07-10 | 2000-01-28 | Fujitsu Ltd | Driver circuit |
ATE328390T1 (en) | 1998-07-24 | 2006-06-15 | Texas Instr Denmark As | METHOD FOR REDUCING ZERO CROSS DISTORTION AND NOISE IN AN AMPLIFIER, AMPLIFIER AND APPLICATION OF SUCH METHOD AND AMPLIFIER |
US6262616B1 (en) * | 1999-10-08 | 2001-07-17 | Cirrus Logic, Inc. | Open loop supply independent digital/logic delay circuit |
-
2001
- 2001-08-30 US US09/943,177 patent/US6605991B2/en not_active Expired - Lifetime
-
2002
- 2002-08-13 KR KR1020047002929A patent/KR100939447B1/en not_active IP Right Cessation
- 2002-08-13 JP JP2003525986A patent/JP4210594B2/en not_active Expired - Fee Related
- 2002-08-13 WO PCT/US2002/025905 patent/WO2003021770A1/en active Application Filing
- 2002-08-13 EP EP02753467A patent/EP1423912A1/en not_active Withdrawn
- 2002-08-27 TW TW091119391A patent/TWI240484B/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4164714A (en) * | 1977-09-26 | 1979-08-14 | Harris Corporation | Polyphase PDM amplifier |
US4164714B1 (en) * | 1977-09-26 | 1984-12-25 | ||
US4968948A (en) * | 1988-12-28 | 1990-11-06 | Pioneer Electronic Corporation | Pulse width modulation amplifier circuit |
US5398003A (en) * | 1994-03-30 | 1995-03-14 | Apple Computer, Inc. | Pulse width modulation speaker amplifier |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004017513A1 (en) * | 2002-08-14 | 2004-02-26 | Dspfactory Sa | Amplifier |
US7515072B2 (en) | 2003-09-25 | 2009-04-07 | International Rectifier Corporation | Method and apparatus for converting PCM to PWM |
EP1800402A2 (en) * | 2004-09-29 | 2007-06-27 | Texas Instruments Incorporated | Spread frequency spectrum waveform generating circuit |
EP1800402A4 (en) * | 2004-09-29 | 2013-11-13 | Texas Instruments Inc | Spread frequency spectrum waveform generating circuit |
EP1983800A3 (en) * | 2007-04-16 | 2009-10-28 | Siemens Medical Instruments Pte. Ltd. | Hearing device with highly reliable earpiece control and corresponding method |
US8520881B2 (en) | 2007-04-16 | 2013-08-27 | Siemens Medical Instruments Pte. Ltd. | Hearing apparatus with low-interference receiver control and corresponding method |
Also Published As
Publication number | Publication date |
---|---|
KR20040039310A (en) | 2004-05-10 |
EP1423912A1 (en) | 2004-06-02 |
US6605991B2 (en) | 2003-08-12 |
JP2005509338A (en) | 2005-04-07 |
JP4210594B2 (en) | 2009-01-21 |
KR100939447B1 (en) | 2010-01-29 |
US20030042976A1 (en) | 2003-03-06 |
TWI240484B (en) | 2005-09-21 |
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