IT1396063B1 - Circuito di polarizzazione per un trasduttore acustico microelettromeccanico e relativo metodo di polarizzazione - Google Patents

Circuito di polarizzazione per un trasduttore acustico microelettromeccanico e relativo metodo di polarizzazione

Info

Publication number
IT1396063B1
IT1396063B1 ITTO2009A000243A ITTO20090243A IT1396063B1 IT 1396063 B1 IT1396063 B1 IT 1396063B1 IT TO2009A000243 A ITTO2009A000243 A IT TO2009A000243A IT TO20090243 A ITTO20090243 A IT TO20090243A IT 1396063 B1 IT1396063 B1 IT 1396063B1
Authority
IT
Italy
Prior art keywords
polarization
microelettromechanical
acoustic transducer
circuit
polarization method
Prior art date
Application number
ITTO2009A000243A
Other languages
English (en)
Inventor
Filippo David
Alessandro Gasparini
Original Assignee
St Microelectronics Rousset
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by St Microelectronics Rousset filed Critical St Microelectronics Rousset
Priority to ITTO2009A000243A priority Critical patent/IT1396063B1/it
Priority to US12/750,515 priority patent/US8488812B2/en
Priority to CN201010187328.0A priority patent/CN101854575B/zh
Publication of ITTO20090243A1 publication Critical patent/ITTO20090243A1/it
Application granted granted Critical
Publication of IT1396063B1 publication Critical patent/IT1396063B1/it
Priority to US13/921,033 priority patent/US9329610B2/en

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/462—Regulating voltage or current wherein the variable actually regulated by the final control device is dc as a function of the requirements of the load, e.g. delay, temperature, specific voltage/current characteristic
    • G05F1/467—Sources with noise compensation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
    • H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Amplifiers (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
ITTO2009A000243A 2009-03-31 2009-03-31 Circuito di polarizzazione per un trasduttore acustico microelettromeccanico e relativo metodo di polarizzazione IT1396063B1 (it)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ITTO2009A000243A IT1396063B1 (it) 2009-03-31 2009-03-31 Circuito di polarizzazione per un trasduttore acustico microelettromeccanico e relativo metodo di polarizzazione
US12/750,515 US8488812B2 (en) 2009-03-31 2010-03-30 Biasing circuit for a microelectromechanical acoustic transducer and related biasing method
CN201010187328.0A CN101854575B (zh) 2009-03-31 2010-03-31 用于微型机电声音转换器的偏置电路、装置及偏置方法
US13/921,033 US9329610B2 (en) 2009-03-31 2013-06-18 Biasing circuit for a microelectromechanical acoustic transducer and related biasing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO2009A000243A IT1396063B1 (it) 2009-03-31 2009-03-31 Circuito di polarizzazione per un trasduttore acustico microelettromeccanico e relativo metodo di polarizzazione

Publications (2)

Publication Number Publication Date
ITTO20090243A1 ITTO20090243A1 (it) 2010-10-01
IT1396063B1 true IT1396063B1 (it) 2012-11-09

Family

ID=41058560

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO2009A000243A IT1396063B1 (it) 2009-03-31 2009-03-31 Circuito di polarizzazione per un trasduttore acustico microelettromeccanico e relativo metodo di polarizzazione

Country Status (3)

Country Link
US (2) US8488812B2 (it)
CN (1) CN101854575B (it)
IT (1) IT1396063B1 (it)

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US8831246B2 (en) * 2009-12-14 2014-09-09 Invensense, Inc. MEMS microphone with programmable sensitivity
DE102011010506B4 (de) * 2011-02-07 2017-10-26 Tdk Corporation Mikrofonanordnung
US8405449B2 (en) * 2011-03-04 2013-03-26 Akustica, Inc. Resettable high-voltage capable high impedance biasing network for capacitive sensors
CN103858446A (zh) * 2011-08-18 2014-06-11 美商楼氏电子有限公司 用于mems装置的灵敏度调整装置和方法
US9236837B2 (en) 2011-08-25 2016-01-12 Infineon Technologies Ag System and method for low distortion capacitive signal source amplifier
US9337722B2 (en) 2012-01-27 2016-05-10 Invensense, Inc. Fast power-up bias voltage circuit
EP3509323B1 (en) * 2012-06-12 2020-12-23 ams AG Sensor arrangement and method for generating an amplified sensor signal
US9148729B2 (en) 2012-09-25 2015-09-29 Invensence, Inc. Microphone with programmable frequency response
US9258660B2 (en) * 2013-03-14 2016-02-09 Robert Bosch Gmbh Reset circuit for MEMS capacitive microphones
DE102013106808A1 (de) * 2013-06-28 2014-12-31 Sma Solar Technology Ag Schaltungsanordnung zur Inline-Spannungsversorgung
JP6311241B2 (ja) * 2013-09-10 2018-04-18 オムロン株式会社 静電容量型トランスデューサのためのプリアンプ回路
US9319779B2 (en) * 2013-10-22 2016-04-19 Infineon Technologies Ag System and method for transducer biasing and shock protection
US10589987B2 (en) * 2013-11-06 2020-03-17 Infineon Technologies Ag System and method for a MEMS transducer
GB2521416B (en) * 2013-12-19 2017-02-01 Cirrus Logic Int Semiconductor Ltd Biasing circuitry for MEMS transducers
US9190903B2 (en) 2013-12-20 2015-11-17 Infineon Technologies, Ag System and method for a controlled feedback charge pump
JP6519972B2 (ja) * 2014-02-07 2019-05-29 株式会社リコー ハイパスフィルタ回路及びバンドパスフィルタ回路
US9462395B2 (en) * 2014-07-22 2016-10-04 Stmicroelectronics S.R.L. Biasing circuit for a MEMS acoustic transducer with reduced start-up time
EP3192278B1 (en) * 2014-09-10 2019-07-03 Robert Bosch GmbH Method of detecting defects in a high impedance network of a mems microphone sensor interface circuit
US10145728B2 (en) * 2014-09-15 2018-12-04 Stmicroelectronics S.R.L. Reception and transmission circuit for a capacitive micromachined ultrasonic transducer
US10114114B2 (en) 2014-09-15 2018-10-30 Stmicroelectronics S.R.L. Ultrasonic probe with precharge circuit and method of controlling an ultrasonic probe
US9628920B2 (en) * 2014-10-16 2017-04-18 Infineon Technologies Ag Voltage generator and biasing thereof
KR101601214B1 (ko) * 2014-11-11 2016-03-08 현대자동차주식회사 마이크로폰의 바이어싱 회로 및 이를 포함하는 마이크로폰
US10680524B2 (en) 2014-12-10 2020-06-09 Richwave Technology Corp. Fast-charging voltage generator
US9590500B2 (en) * 2014-12-10 2017-03-07 Richwave Technology Corp. Voltage generator
US9648433B1 (en) 2015-12-15 2017-05-09 Robert Bosch Gmbh Absolute sensitivity of a MEMS microphone with capacitive and piezoelectric electrodes
DE102016109118A1 (de) * 2016-05-18 2017-11-23 Infineon Technologies Ag Schaltkreisarchitektur für eine Messanordnung, einen Pegelwandler-Schaltkreis, eine Ladungspumpstufe und eine Ladungspumpe sowie Verfahren zum Betreiben dieser
US11228843B2 (en) 2016-10-07 2022-01-18 Vesper Technologies Inc. Electrically isolated device for providing a sub-threshold conduction path for leakage current across a piezoelectric transducer
US10349161B2 (en) * 2016-10-19 2019-07-09 Fortemedia, Inc. Microphone circuits for canceling out the leakage characteristics of a transducer
EP3324645A1 (en) 2016-11-18 2018-05-23 Sonion Nederland B.V. A phase correcting system and a phase correctable transducer system
US20180145643A1 (en) 2016-11-18 2018-05-24 Sonion Nederland B.V. Circuit for providing a high and a low impedance and a system comprising the circuit
EP3324649A1 (en) 2016-11-18 2018-05-23 Sonion Nederland B.V. A transducer with a high sensitivity
EP3324538A1 (en) 2016-11-18 2018-05-23 Sonion Nederland B.V. A sensing circuit comprising an amplifying circuit
US10123117B1 (en) * 2017-05-03 2018-11-06 Cirrus Logic, Inc. Input impedance biasing
CN107426658B (zh) * 2017-08-01 2020-06-19 重庆东微电子股份有限公司 偏置电路及mems麦克风
CN107371100B (zh) * 2017-09-14 2020-02-28 珠海全志科技股份有限公司 一种麦克风偏置驱动电路
US11025204B2 (en) * 2017-11-02 2021-06-01 Mediatek Inc. Circuit having high-pass filter with variable corner frequency
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IT201800001967A1 (it) * 2018-01-26 2019-07-26 System Spa Amplificatore per il pilotaggio di un carico capacitivo
IT201800004665A1 (it) 2018-04-18 2019-10-18 Circuito elettronico di interfaccia per un trasduttore acustico microelettromeccanico e relativo metodo
US11778390B2 (en) * 2019-11-07 2023-10-03 Knowles Electronics, Llc. Microphone assembly having a direct current bias circuit
CN113423042B (zh) * 2021-06-18 2022-08-02 珠海格力电器股份有限公司 降噪系统及噪声数据处理方法

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TW200614846A (en) * 2004-09-24 2006-05-01 Hosiden Corp Signal amplifying circuit and acceleration sensor having the same
US7929716B2 (en) * 2005-01-06 2011-04-19 Renesas Electronics Corporation Voltage supply circuit, power supply circuit, microphone unit using the same, and microphone unit sensitivity adjustment method
EP1908330A2 (en) * 2005-07-19 2008-04-09 Audioasics A/S Programmable microphone
US7756266B2 (en) * 2005-11-03 2010-07-13 Industrial Technology Research Institute Device for voltage-noise rejection and fast start-up
US20070217628A1 (en) * 2006-03-17 2007-09-20 Knowles Electronics, Llc Two-wire microphone circuit
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ATE550886T1 (de) * 2006-09-26 2012-04-15 Epcos Pte Ltd Kalibriertes mikroelektromechanisches mikrofon
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Also Published As

Publication number Publication date
CN101854575B (zh) 2015-06-03
US9329610B2 (en) 2016-05-03
US20130279721A1 (en) 2013-10-24
CN101854575A (zh) 2010-10-06
ITTO20090243A1 (it) 2010-10-01
US20100246859A1 (en) 2010-09-30
US8488812B2 (en) 2013-07-16

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