CN1866728A - 数字放大器、脉冲宽度调制器以及减小其突发噪声的方法 - Google Patents
数字放大器、脉冲宽度调制器以及减小其突发噪声的方法 Download PDFInfo
- Publication number
- CN1866728A CN1866728A CNA2005100995966A CN200510099596A CN1866728A CN 1866728 A CN1866728 A CN 1866728A CN A2005100995966 A CNA2005100995966 A CN A2005100995966A CN 200510099596 A CN200510099596 A CN 200510099596A CN 1866728 A CN1866728 A CN 1866728A
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- Prior art keywords
- pulse
- pwm
- signal
- amplifier
- width modulator
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- 238000000034 method Methods 0.000 title claims description 25
- 239000000654 additive Substances 0.000 claims description 16
- 230000000996 additive effect Effects 0.000 claims description 16
- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 230000005236 sound signal Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 6
- 238000005070 sampling Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K7/00—Modulating pulses with a continuously-variable modulating signal
- H03K7/08—Duration or width modulation ; Duty cycle modulation
-
- 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
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/26—Modifications of amplifiers to reduce influence of noise generated by amplifying elements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
- H03F1/305—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in case of switching on or off of a power supply
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
-
- 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
- H03F2200/351—Pulse width modulation being used in an amplifying circuit
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
Description
寄存器名称 | 宽度(ns) | 相位 | 寄存器名称 | 宽度(ns) | 相位 |
PWM加法寄存器0 | 640 | 0 | PWM减法寄存器0 | 640 | 0 |
PWM加法寄存器1 | 1320 | 1 | PWM减法寄存器1 | 1320 | 1 |
PWM加法寄存器2 | 975 | 0 | PWM减法寄存器2 | 655 | 0 |
PWM加法寄存器3 | 920 | 1 | PWM减法寄存器3 | 320 | 1 |
PWM加法寄存器4 | 1155 | 0 | PWM减法寄存器4 | 920 | 0 |
PWM加法寄存器5 | 1245 | 1 | PWM减法寄存器5 | 1155 | 1 |
PWM加法寄存器6 | 1160 | 0 | PWM减法寄存器6 | 1245 | 0 |
PWM加法寄存器7 | 1065 | 1 | PWM减法寄存器7 | 1160 | 1 |
PWM加法寄存器8 | 1090 | 0 | PWM减法寄存器8 | 1065 | 0 |
PWM加法寄存器9 | PWM减法寄存器9 | 1090 | 1 |
Claims (16)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020050041101 | 2005-05-17 | ||
KR1020050041101A KR100618408B1 (ko) | 2005-05-17 | 2005-05-17 | 디지털 앰프용 펄스 폭 변조기, 디지털 앰프의 팝 노이즈감소 방법 및 디지털 앰프 |
KR10-2005-0041101 | 2005-05-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1866728A true CN1866728A (zh) | 2006-11-22 |
CN1866728B CN1866728B (zh) | 2011-06-01 |
Family
ID=37425631
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2005100995966A Expired - Fee Related CN1866728B (zh) | 2005-05-17 | 2005-09-14 | 数字放大器、脉冲宽度调制器以及减小其突发噪声的方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7508873B2 (zh) |
KR (1) | KR100618408B1 (zh) |
CN (1) | CN1866728B (zh) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102324914A (zh) * | 2011-09-16 | 2012-01-18 | 广东欧珀移动通信有限公司 | 一种pwm输出控制方法 |
CN102801390A (zh) * | 2012-09-07 | 2012-11-28 | 电子科技大学 | 用于d类音频放大器中的pop噪声抑制电路 |
CN103379411A (zh) * | 2012-04-13 | 2013-10-30 | 立锜科技股份有限公司 | 降低音频系统启动或关闭时的瞬变信号的控制装置及方法 |
CN104052313A (zh) * | 2013-03-14 | 2014-09-17 | 弗莱克斯电子有限责任公司 | 消除数字信号控制器上电期间的随机脉冲的方法和实现 |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007074663A1 (ja) * | 2005-12-27 | 2007-07-05 | Matsushita Electric Industrial Co., Ltd. | 送信装置 |
JP2007235409A (ja) * | 2006-02-28 | 2007-09-13 | Fujitsu Ten Ltd | 音響信号生成装置 |
TWI318495B (en) * | 2006-06-29 | 2009-12-11 | Realtek Semiconductor Corp | Switching audio power amplifier and method for pop noise suppression |
US7863956B2 (en) * | 2008-10-06 | 2011-01-04 | Telefonaktiebolaget L M Ericsson (Publ) | Pulse-elimination pulse-width modulation |
JP5026488B2 (ja) * | 2008-10-28 | 2012-09-12 | 旭化成エレクトロニクス株式会社 | Pwm信号生成回路、d級増幅器及びその駆動方法 |
US8265303B2 (en) * | 2009-03-11 | 2012-09-11 | Pacifictech Microelectronics, Inc. | Circuits and methods for reducing pop noise in class D amplifiers |
KR100945683B1 (ko) | 2009-06-17 | 2010-03-05 | 주식회사 엠디아이 | 불요파 노이즈 감소회로를 구비한 오디오 앰프 |
CN102064715A (zh) * | 2009-11-17 | 2011-05-18 | 鸿富锦精密工业(深圳)有限公司 | Pwm控制器相位调节系统及调节方法 |
IT1401466B1 (it) | 2010-06-25 | 2013-07-26 | St Microelectronics Srl | Circuito elettronico per pilotare un amplificatore a commutazione |
US8428204B2 (en) * | 2010-08-20 | 2013-04-23 | Raytheon Company | Recovering distorted digital data |
WO2012033655A1 (en) * | 2010-09-10 | 2012-03-15 | Marvell World Trade Ltd | Electro-magnetic interference reduction for switched signal systems |
JP5655733B2 (ja) * | 2011-07-21 | 2015-01-21 | サンケン電気株式会社 | 演算処理装置およびマイクロコンピュータ |
EP2658117B1 (en) * | 2012-04-27 | 2014-08-20 | Nxp B.V. | Pop-noise reducing method for adjusting switching frequency or phase in a class-D amplifier |
TWI479799B (zh) * | 2012-08-13 | 2015-04-01 | Richtek Technology Corp | 可降低零交叉失真的音訊信號處理電路及方法 |
JP6172580B2 (ja) | 2014-12-25 | 2017-08-02 | ヤマハ株式会社 | 差動信号を利用したアナログ信号生成装置および方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5431625A (en) * | 1991-02-01 | 1995-07-11 | Empi, Inc. | Iontophoresis electronic device having a ramped output current |
JPH04281606A (ja) * | 1991-03-11 | 1992-10-07 | Matsushita Electric Ind Co Ltd | パルス幅変調増幅器 |
US5408150A (en) * | 1992-06-04 | 1995-04-18 | Linear Technology Corporation | Circuit for driving two power mosfets in a half-bridge configuration |
US6016075A (en) * | 1997-06-04 | 2000-01-18 | Lord Corporation | Class-D amplifier input structure |
US6487246B1 (en) * | 1999-04-08 | 2002-11-26 | National Semiconductor Corporation | Method and apparatus for programmable pulse width modulated signal generation with period and duty cycle values updated with controlled relative timing |
JP3916449B2 (ja) | 2001-11-20 | 2007-05-16 | 新日本無線株式会社 | 増幅装置 |
JP2004120405A (ja) * | 2002-09-26 | 2004-04-15 | Denon Ltd | デジタル増幅器 |
KR100604815B1 (ko) * | 2003-05-02 | 2006-07-26 | 삼성전자주식회사 | 신호 발생장치 및 신호 발생방법 |
JP2004336765A (ja) | 2003-05-02 | 2004-11-25 | Samsung Electronics Co Ltd | ポップノイズ減少のための音声信号発生装置及び音声信号発生方法 |
KR100498497B1 (ko) * | 2003-05-10 | 2005-07-01 | 삼성전자주식회사 | 이상 상태에서 정상 상태로의 복귀 시에 발생되는 과도응답 현상을 방지하는 d급 파워 증폭기 및 그 방법 |
KR100502843B1 (ko) * | 2003-05-16 | 2005-07-21 | 네오피델리티 주식회사 | 싱글 엔드 디지털앰프에서의 팝노이즈 제거방법 및 그시스템 |
-
2005
- 2005-05-17 KR KR1020050041101A patent/KR100618408B1/ko not_active IP Right Cessation
- 2005-07-28 US US11/192,293 patent/US7508873B2/en not_active Expired - Fee Related
- 2005-09-14 CN CN2005100995966A patent/CN1866728B/zh not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102324914A (zh) * | 2011-09-16 | 2012-01-18 | 广东欧珀移动通信有限公司 | 一种pwm输出控制方法 |
CN103379411A (zh) * | 2012-04-13 | 2013-10-30 | 立锜科技股份有限公司 | 降低音频系统启动或关闭时的瞬变信号的控制装置及方法 |
CN102801390A (zh) * | 2012-09-07 | 2012-11-28 | 电子科技大学 | 用于d类音频放大器中的pop噪声抑制电路 |
CN102801390B (zh) * | 2012-09-07 | 2015-01-07 | 电子科技大学 | 用于d类音频放大器中的pop噪声抑制电路 |
CN104052313A (zh) * | 2013-03-14 | 2014-09-17 | 弗莱克斯电子有限责任公司 | 消除数字信号控制器上电期间的随机脉冲的方法和实现 |
CN104052313B (zh) * | 2013-03-14 | 2018-06-01 | 弗莱克斯电子有限责任公司 | 消除数字信号控制器上电期间的随机脉冲的方法和装置 |
Also Published As
Publication number | Publication date |
---|---|
US7508873B2 (en) | 2009-03-24 |
KR100618408B1 (ko) | 2006-08-31 |
US20060262843A1 (en) | 2006-11-23 |
CN1866728B (zh) | 2011-06-01 |
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C14 | Grant of patent or utility model | ||
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Owner name: ARBROWELL SEMICONDUCTOR CO. LTD. Free format text: FORMER OWNER: WAVESPEED DIGITAL SCIENCE AND TECHNOLOGY CO., LTD. Effective date: 20150120 |
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Effective date of registration: 20150120 Address after: North Chungcheong Province Patentee after: Granville Semiconductor Ltd. Address before: Seoul, South Kerean Patentee before: Pulsus Technologies |
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CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110601 Termination date: 20160914 |