FR2881005B1 - Methode et topologie pour commuter un etage de sortie dans un amplificateur audio de classe ab pour des applications sans fil - Google Patents
Methode et topologie pour commuter un etage de sortie dans un amplificateur audio de classe ab pour des applications sans filInfo
- Publication number
- FR2881005B1 FR2881005B1 FR0500506A FR0500506A FR2881005B1 FR 2881005 B1 FR2881005 B1 FR 2881005B1 FR 0500506 A FR0500506 A FR 0500506A FR 0500506 A FR0500506 A FR 0500506A FR 2881005 B1 FR2881005 B1 FR 2881005B1
- Authority
- FR
- France
- Prior art keywords
- topology
- class
- switching
- audio amplifier
- output range
- 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.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
- H03F3/3081—Duplicated single-ended push-pull arrangements, i.e. bridge circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
- H03F3/3001—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor with field-effect transistors
- H03F3/3061—Bridge type, i.e. two complementary controlled SEPP output stages
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
- H03F3/45475—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using IC blocks as the active amplifying circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/72—Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/03—Indexing scheme relating to amplifiers the amplifier being designed for audio applications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/411—Indexing scheme relating to amplifiers the output amplifying stage of an amplifier comprising two power stages
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45134—Indexing scheme relating to differential amplifiers the whole differential amplifier together with other coupled stages being fully differential realised
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45138—Two or more differential amplifiers in IC-block form are combined, e.g. measuring amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45534—Indexing scheme relating to differential amplifiers the FBC comprising multiple switches and being coupled between the LC and the IC
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/72—Indexing scheme relating to gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
- H03F2203/7215—Indexing scheme relating to gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal the gated amplifier being switched on or off by a switch at the input of the amplifier
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0500506A FR2881005B1 (fr) | 2005-01-18 | 2005-01-18 | Methode et topologie pour commuter un etage de sortie dans un amplificateur audio de classe ab pour des applications sans fil |
US11/109,410 US8233641B2 (en) | 2005-01-18 | 2005-04-19 | Method and topology to switch an output stage in a class ab audio amplifier for wireless applications |
PCT/US2005/045312 WO2006078378A2 (fr) | 2005-01-18 | 2005-12-15 | Procede et topologie permettant de commuter un etage de sortie dans un amplificateur audio de classe ab destines a des applications sans fil |
EP05854097A EP1839378A4 (fr) | 2005-01-18 | 2005-12-15 | Procede et topologie permettant de commuter un etage de sortie dans un amplificateur audio de classe ab destines a des applications sans fil |
CNA2005800466405A CN101103505A (zh) | 2005-01-18 | 2005-12-15 | 适于无线应用的ab类音频放大器中输出级的切换方法和拓扑 |
TW095100033A TW200644410A (en) | 2005-01-18 | 2006-01-02 | Amplifier and method for switching amplifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0500506A FR2881005B1 (fr) | 2005-01-18 | 2005-01-18 | Methode et topologie pour commuter un etage de sortie dans un amplificateur audio de classe ab pour des applications sans fil |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2881005A1 FR2881005A1 (fr) | 2006-07-21 |
FR2881005B1 true FR2881005B1 (fr) | 2007-03-30 |
Family
ID=34955072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR0500506A Expired - Fee Related FR2881005B1 (fr) | 2005-01-18 | 2005-01-18 | Methode et topologie pour commuter un etage de sortie dans un amplificateur audio de classe ab pour des applications sans fil |
Country Status (4)
Country | Link |
---|---|
US (1) | US8233641B2 (fr) |
CN (1) | CN101103505A (fr) |
FR (1) | FR2881005B1 (fr) |
TW (1) | TW200644410A (fr) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4152374B2 (ja) * | 2004-10-28 | 2008-09-17 | 松下電器産業株式会社 | スピーカ駆動用増幅装置および音声出力装置 |
US8362838B2 (en) * | 2007-01-19 | 2013-01-29 | Cirrus Logic, Inc. | Multi-stage amplifier with multiple sets of fixed and variable voltage rails |
TWM332340U (en) * | 2007-12-04 | 2008-05-11 | Princeton Technology Corp | Audio playing system |
US8649527B2 (en) * | 2007-12-14 | 2014-02-11 | Freescale Semiconductor, Inc. | Amplifier circuit, electronic device, method for configuring an amplifier circuit |
US20100102940A1 (en) * | 2008-10-23 | 2010-04-29 | Mallory Sonalert Products, Inc. | Electronic sound level control in audible signaling devices |
US8532315B2 (en) * | 2009-04-02 | 2013-09-10 | The United States Of America As Represented By The Secretary Of The Army | High powered high speed switch |
US8310314B2 (en) * | 2010-09-06 | 2012-11-13 | Mediatek Inc. | Signal amplification circuits for receiving/transmitting signals according to input signal |
EP2448115B1 (fr) * | 2010-10-28 | 2015-06-03 | Nxp B.V. | Amplificateur audio |
US9543913B2 (en) * | 2013-01-09 | 2017-01-10 | Osc, Llc | Programmably configured switchmode audio amplifier |
US9301046B1 (en) * | 2013-09-27 | 2016-03-29 | Cirrus Logic, Inc. | Systems and methods for minimizing distortion in an audio output stage |
TWI511579B (zh) * | 2013-09-30 | 2015-12-01 | C Media Electronics Inc | 具主動噪音消除功能之耳機及其自動校正方法 |
US10522124B2 (en) * | 2013-10-30 | 2019-12-31 | Harman Becker Automotive Systems Gmbh | Infotainment system |
CN106464987B (zh) | 2015-03-11 | 2019-10-22 | 华为技术有限公司 | 终端设备、信号的发送方法及装置 |
CN105828248B (zh) * | 2015-07-01 | 2017-08-15 | 维沃移动通信有限公司 | 一种电子设备及其音频处理电路、音频信号的输出方法 |
CN106788291A (zh) * | 2016-12-16 | 2017-05-31 | 深圳市生微电子有限公司 | 大功率功放集成电路 |
EP3506498B1 (fr) * | 2017-12-29 | 2021-03-17 | Honeywell International Inc. | Configuration d'amplificateur de puissance de sortie audio améliorée comprenant une tolérance aux pannes appropriée pour être utilisée dans un système d'alarme |
GB2591523B (en) * | 2020-01-31 | 2022-03-23 | Cirrus Logic Int Semiconductor Ltd | Audio amplifier circuitry |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3462698A (en) * | 1967-02-14 | 1969-08-19 | Gen Electric | All npn transistor dc amplifier |
IT995101B (it) * | 1972-07-31 | 1975-11-10 | Beller Isi | Apparecchio per il trattamento dei disturbi del linguaggio parlato e scritto |
JP2560710B2 (ja) * | 1987-02-09 | 1996-12-04 | 日本電気株式会社 | 集積化スイツチング回路 |
US4991221A (en) * | 1989-04-13 | 1991-02-05 | Rush James M | Active speaker system and components therefor |
SE466427B (sv) * | 1990-06-25 | 1992-02-10 | Ericsson Telefon Ab L M | Handfrigoeringsmodul foer en mobiltelefon |
US5166983A (en) * | 1991-07-22 | 1992-11-24 | Motorola, Inc. | Mute circuit for audio amplifiers |
US5243640A (en) * | 1991-09-06 | 1993-09-07 | Ford Motor Company | Integrated cellular telephone and vehicular audio system |
JP3508776B2 (ja) * | 1993-01-14 | 2004-03-22 | ソニー株式会社 | 送受信機 |
EP0695106B1 (fr) * | 1994-07-29 | 2002-11-27 | STMicroelectronics S.r.l. | Circuit et méthode pour commander des charges électriques à impédance basse au choix |
US5543759A (en) * | 1995-04-07 | 1996-08-06 | Digital Lab Studios, Llc | Audio amplification circuits |
US5862238A (en) * | 1995-09-11 | 1999-01-19 | Starkey Laboratories, Inc. | Hearing aid having input and output gain compression circuits |
KR100206467B1 (ko) * | 1996-05-22 | 1999-07-01 | 윤종용 | 통화처리장치 및 그 방법 |
EP0999721A3 (fr) * | 1998-11-07 | 2003-05-21 | Samsung Electronics Co., Ltd. | Dispositif pour contrôler la connexion d'un microphone auriculaire integré dans un terminal radio portable |
EP1148639A1 (fr) * | 2000-04-19 | 2001-10-24 | THOMSON multimedia | Dispositifs électroniques comportant un amplificateur audio et méthodes de contrôle de tels dispositifs |
US20020175729A1 (en) * | 2001-05-25 | 2002-11-28 | Infineon Technologies North America Corp. | Differential CMOS controlled delay unit |
US20040116159A1 (en) * | 2002-12-13 | 2004-06-17 | Te-Chung Cheng | Hands-free device with a built-in audio pickup unit and loudspeaker unit |
TW200503412A (en) * | 2003-05-07 | 2005-01-16 | Rohm Co Ltd | Audio amplifier circuit and audio IC having the same |
WO2006078378A2 (fr) | 2005-01-18 | 2006-07-27 | Atmel Corporation | Procede et topologie permettant de commuter un etage de sortie dans un amplificateur audio de classe ab destines a des applications sans fil |
-
2005
- 2005-01-18 FR FR0500506A patent/FR2881005B1/fr not_active Expired - Fee Related
- 2005-04-19 US US11/109,410 patent/US8233641B2/en active Active
- 2005-12-15 CN CNA2005800466405A patent/CN101103505A/zh active Pending
-
2006
- 2006-01-02 TW TW095100033A patent/TW200644410A/zh unknown
Also Published As
Publication number | Publication date |
---|---|
TW200644410A (en) | 2006-12-16 |
US8233641B2 (en) | 2012-07-31 |
FR2881005A1 (fr) | 2006-07-21 |
US20060159292A1 (en) | 2006-07-20 |
CN101103505A (zh) | 2008-01-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse |
Effective date: 20120928 |