CN101964936B - 用于数字麦克风的处理芯片及其输入电路、数字麦克风 - Google Patents
用于数字麦克风的处理芯片及其输入电路、数字麦克风 Download PDFInfo
- Publication number
- CN101964936B CN101964936B CN 201010505911 CN201010505911A CN101964936B CN 101964936 B CN101964936 B CN 101964936B CN 201010505911 CN201010505911 CN 201010505911 CN 201010505911 A CN201010505911 A CN 201010505911A CN 101964936 B CN101964936 B CN 101964936B
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- China
- Prior art keywords
- branch road
- pmos pipe
- input circuit
- source electrode
- microphone
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R19/00—Electrostatic transducers
- H04R19/04—Microphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
- H04R3/06—Circuits for transducers, loudspeakers or microphones for correcting frequency response of electrostatic transducers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
- Amplifiers (AREA)
- Semiconductor Integrated Circuits (AREA)
Abstract
Description
Claims (6)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201010505911 CN101964936B (zh) | 2010-10-09 | 2010-10-09 | 用于数字麦克风的处理芯片及其输入电路、数字麦克风 |
US13/248,975 US9008332B2 (en) | 2010-10-09 | 2011-09-29 | Processing chip for a digital microphone and related input circuit and a digital microphone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201010505911 CN101964936B (zh) | 2010-10-09 | 2010-10-09 | 用于数字麦克风的处理芯片及其输入电路、数字麦克风 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101964936A CN101964936A (zh) | 2011-02-02 |
CN101964936B true CN101964936B (zh) | 2013-06-19 |
Family
ID=43517628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 201010505911 Active CN101964936B (zh) | 2010-10-09 | 2010-10-09 | 用于数字麦克风的处理芯片及其输入电路、数字麦克风 |
Country Status (2)
Country | Link |
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US (1) | US9008332B2 (zh) |
CN (1) | CN101964936B (zh) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105681971B (zh) * | 2016-01-13 | 2018-12-11 | 瑞声光电科技(常州)有限公司 | 麦克风模拟集成电路 |
EP3197046B1 (en) * | 2016-01-25 | 2021-04-14 | Sonion Nederland B.V. | Self-biasing output booster amplifier and use thereof |
CN114679666B (zh) * | 2022-04-01 | 2023-04-18 | 瑞声声学科技(深圳)有限公司 | 麦克风放大电路设计方法及麦克风放大电路 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2694649Y (zh) * | 2004-04-05 | 2005-04-20 | 辅升电子科技(深圳)有限公司 | 可去除噪声的麦克风输入电路 |
CN201307878Y (zh) * | 2008-11-05 | 2009-09-09 | 宇龙计算机通信科技(深圳)有限公司 | 一种模拟音频输入电路、移动通信终端和耳机 |
CN201813516U (zh) * | 2010-10-09 | 2011-04-27 | 北京昆腾微电子有限公司 | 用于数字麦克风的处理芯片及其输入电路、数字麦克风 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19545760C1 (de) * | 1995-12-07 | 1997-02-20 | Siemens Audiologische Technik | Digitales Hörgerät |
JP2001196867A (ja) * | 1999-11-04 | 2001-07-19 | Teac Corp | オーディオ信号入力回路 |
WO2002073792A2 (en) * | 2001-03-09 | 2002-09-19 | Techtronic A/S | An electret condensor microphone preamplifier that is insensitive to leakage currents at the input |
JP4743570B2 (ja) * | 2001-04-10 | 2011-08-10 | ルネサスエレクトロニクス株式会社 | 電源回路を内蔵した半導体集積回路および液晶表示制御装置並びに携帯用電子機器 |
US6888408B2 (en) * | 2002-08-27 | 2005-05-03 | Sonion Tech A/S | Preamplifier for two terminal electret condenser microphones |
US6963140B2 (en) * | 2003-03-17 | 2005-11-08 | Analog Power Intellectual Properties | Transistor having multiple gate pads |
US7756279B2 (en) * | 2003-10-14 | 2010-07-13 | Audioasics A/S | Microphone preamplifier |
EP1742506B1 (en) * | 2005-07-06 | 2013-05-22 | Epcos Pte Ltd | Microphone assembly with P-type preamplifier input stage |
ITTO20090495A1 (it) * | 2009-06-30 | 2011-01-01 | St Microelectronics Srl | Circuito preamplificatore per un trasduttore acustico capacitivo di tipo microelettromeccanico |
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2010
- 2010-10-09 CN CN 201010505911 patent/CN101964936B/zh active Active
-
2011
- 2011-09-29 US US13/248,975 patent/US9008332B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2694649Y (zh) * | 2004-04-05 | 2005-04-20 | 辅升电子科技(深圳)有限公司 | 可去除噪声的麦克风输入电路 |
CN201307878Y (zh) * | 2008-11-05 | 2009-09-09 | 宇龙计算机通信科技(深圳)有限公司 | 一种模拟音频输入电路、移动通信终端和耳机 |
CN201813516U (zh) * | 2010-10-09 | 2011-04-27 | 北京昆腾微电子有限公司 | 用于数字麦克风的处理芯片及其输入电路、数字麦克风 |
Non-Patent Citations (1)
Title |
---|
JP特开2001-196867A 2001.07.19 |
Also Published As
Publication number | Publication date |
---|---|
US9008332B2 (en) | 2015-04-14 |
US20120250898A1 (en) | 2012-10-04 |
CN101964936A (zh) | 2011-02-02 |
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Owner name: KUNTENG MICROELECTRONIC CO., LTD. Free format text: FORMER NAME: BEIJING KUNTENG MICRO-ELECTRONICS INC. Owner name: BEIJING KUNTENG MICRO-ELECTRONICS INC. Free format text: FORMER NAME: KT MICRO, INC. |
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Address after: 100097 Beijing city Haidian District landianchang Road No. 2 Jin Yuan Business Center Building 2, block B, floor 8, B Patentee after: Beijing Kunteng electronic Limited by Share Ltd. Address before: 100097 Beijing city Haidian District landianchang Road No. 2 Jin Yuan Business Center Building 2, block B, floor 8, B Patentee before: KT MICRO Inc. (BEIJING) |
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Address after: 100195 Beijing, Yuquan, No. 23 Haidian District Road, building No. 4 Patentee after: KT MICRO, Inc. Address before: 100097 Beijing city Haidian District landianchang Road No. 2 Jin Yuan Business Center Building 2, block B, floor 8, B Patentee before: Beijing Kunteng electronic Limited by Share Ltd. |