TWI240484B - 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
- TWI240484B TWI240484B TW091119391A TW91119391A TWI240484B TW I240484 B TWI240484 B TW I240484B TW 091119391 A TW091119391 A TW 091119391A TW 91119391 A TW91119391 A TW 91119391A TW I240484 B TWI240484 B TW I240484B
- Authority
- TW
- Taiwan
- Prior art keywords
- signal
- switching
- switching signal
- amplifier
- input
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000003595 spectral effect Effects 0.000 title claims abstract description 8
- 230000003111 delayed effect Effects 0.000 claims abstract description 9
- 230000001934 delay Effects 0.000 claims abstract description 3
- 238000001228 spectrum Methods 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 230000000737 periodic effect Effects 0.000 claims 2
- 230000009471 action Effects 0.000 abstract description 2
- 230000005236 sound signal Effects 0.000 description 19
- 238000012545 processing Methods 0.000 description 17
- 238000005070 sampling Methods 0.000 description 14
- 230000001629 suppression Effects 0.000 description 8
- 230000008901 benefit Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002146 bilateral effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 241000238876 Acari Species 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 210000004709 eyebrow Anatomy 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
| 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 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TWI240484B true TWI240484B (en) | 2005-09-21 |
Family
ID=25479210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW091119391A TWI240484B (en) | 2001-08-30 | 2002-08-27 | Circuitry for creating a spectral null in a differential output switching amplifier and method therefor |
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)
| 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)
| 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 |
-
2001
- 2001-08-30 US US09/943,177 patent/US6605991B2/en not_active Expired - Lifetime
-
2002
- 2002-08-13 WO PCT/US2002/025905 patent/WO2003021770A1/en not_active Ceased
- 2002-08-13 KR KR1020047002929A patent/KR100939447B1/ko not_active Expired - Fee Related
- 2002-08-13 JP JP2003525986A patent/JP4210594B2/ja not_active Expired - Fee Related
- 2002-08-13 EP EP02753467A patent/EP1423912A1/en not_active Withdrawn
- 2002-08-27 TW TW091119391A patent/TWI240484B/zh not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JP4210594B2 (ja) | 2009-01-21 |
| WO2003021770A1 (en) | 2003-03-13 |
| EP1423912A1 (en) | 2004-06-02 |
| KR100939447B1 (ko) | 2010-01-29 |
| JP2005509338A (ja) | 2005-04-07 |
| US6605991B2 (en) | 2003-08-12 |
| US20030042976A1 (en) | 2003-03-06 |
| KR20040039310A (ko) | 2004-05-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Annulment or lapse of patent due to non-payment of fees |