DE69317344T2 - Ausgangsbegrenzer für einen Klasse-D BICMOS-Hörgeräteausgangsverstärker - Google Patents

Ausgangsbegrenzer für einen Klasse-D BICMOS-Hörgeräteausgangsverstärker

Info

Publication number
DE69317344T2
DE69317344T2 DE69317344T DE69317344T DE69317344T2 DE 69317344 T2 DE69317344 T2 DE 69317344T2 DE 69317344 T DE69317344 T DE 69317344T DE 69317344 T DE69317344 T DE 69317344T DE 69317344 T2 DE69317344 T2 DE 69317344T2
Authority
DE
Germany
Prior art keywords
pulse
output
limiter
class
pwm
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
Application number
DE69317344T
Other languages
English (en)
Other versions
DE69317344D1 (de
Inventor
Ciro Milazzo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Exar Corp
Original Assignee
Exar Corp
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 Exar Corp filed Critical Exar Corp
Application granted granted Critical
Publication of DE69317344D1 publication Critical patent/DE69317344D1/de
Publication of DE69317344T2 publication Critical patent/DE69317344T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/35—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using translation techniques
    • H04R25/356—Amplitude, e.g. amplitude shift or compression
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/22—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the bipolar type only
    • G05F3/222—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the bipolar type only with compensation for device parameters, e.g. Early effect, gain, manufacturing process, or external variations, e.g. temperature, loading, supply voltage
    • G05F3/225—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the bipolar type only with compensation for device parameters, e.g. Early effect, gain, manufacturing process, or external variations, e.g. temperature, loading, supply voltage producing a current or voltage as a predetermined function of the temperature
    • 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
    • H03F1/302—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in bipolar transistor amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
    • 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
    • H03G—CONTROL OF AMPLIFICATION
    • H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electromagnetism (AREA)
  • Neurosurgery (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Nonlinear Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Otolaryngology (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Circuit For Audible Band Transducer (AREA)
DE69317344T 1992-09-30 1993-09-24 Ausgangsbegrenzer für einen Klasse-D BICMOS-Hörgeräteausgangsverstärker Expired - Fee Related DE69317344T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/953,901 US5389829A (en) 1991-09-27 1992-09-30 Output limiter for class-D BICMOS hearing aid output amplifier

Publications (2)

Publication Number Publication Date
DE69317344D1 DE69317344D1 (de) 1998-04-16
DE69317344T2 true DE69317344T2 (de) 1998-10-29

Family

ID=25494694

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69317344T Expired - Fee Related DE69317344T2 (de) 1992-09-30 1993-09-24 Ausgangsbegrenzer für einen Klasse-D BICMOS-Hörgeräteausgangsverstärker

Country Status (5)

Country Link
US (2) US5389829A (de)
EP (1) EP0590903B1 (de)
JP (1) JPH06319197A (de)
AT (1) ATE164033T1 (de)
DE (1) DE69317344T2 (de)

Families Citing this family (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2296614B (en) * 1994-12-23 1999-09-15 Advanced Saw Prod Sa Saw filter
TW437161B (en) * 1995-08-30 2001-05-28 Sony Corp Audio signal amplifying apparatus
US5815581A (en) * 1995-10-19 1998-09-29 Mitel Semiconductor, Inc. Class D hearing aid amplifier with feedback
US5838807A (en) * 1995-10-19 1998-11-17 Mitel Semiconductor, Inc. Trimmable variable compression amplifier for hearing aid
US5719528A (en) * 1996-04-23 1998-02-17 Phonak Ag Hearing aid device
US5815102A (en) * 1996-06-12 1998-09-29 Audiologic, Incorporated Delta sigma pwm dac to reduce switching
GB2314474B (en) * 1996-06-21 2001-03-07 Univ Bristol Low power audio device
US5805020A (en) * 1996-06-27 1998-09-08 Harris Corporation Silent start class D amplifier
US6044162A (en) * 1996-12-20 2000-03-28 Sonic Innovations, Inc. Digital hearing aid using differential signal representations
KR100226226B1 (ko) * 1997-02-24 1999-10-15 윤덕용 혼합형 증폭기
US6768779B1 (en) * 1997-04-02 2004-07-27 Bang & Olufsen Powerhouse A/S Pulse referenced control method for enhanced power amplification of a pulse modulated
CA2287441A1 (en) * 1998-02-19 1999-08-26 Stephen Leigh Kuffner Data communications terminal and method of adjusting a power signal generated therefrom
US5963106A (en) * 1998-03-16 1999-10-05 Sonic Innovations, Inc. Double-sided pulse width modulator
AU3516999A (en) * 1998-05-11 1999-11-29 Toccata Technology Aps A method of reducing distortion and noise of square-wave pulses, a circuit for generating minimally distorted pulses and use of method and the circuit
US6173063B1 (en) * 1998-10-06 2001-01-09 Gn Resound As Output regulator for feedback reduction in hearing aids
DE19858399C2 (de) * 1998-12-17 2003-02-20 Phonak Ag Staefa Elektroakustischer Wandler für Hörgeräte zur Luftschallabstrahlung in den äußeren Gehörgang
US6445321B2 (en) 1999-04-05 2002-09-03 Sonic Innovations, Inc. Hybrid low-pass sigma-delta modulator
US6163287A (en) 1999-04-05 2000-12-19 Sonic Innovations, Inc. Hybrid low-pass sigma-delta modulator
ITMI991386A1 (it) * 1999-06-22 2000-12-22 St Microelectronics Srl Circuito per realizzaione di un tempo minimo di wake - up nei circuiti logici di wake - up
US6225864B1 (en) * 1999-11-02 2001-05-01 Harris Corporation RF amplifier having a dual slope phase modulator
US6292041B1 (en) * 2000-02-16 2001-09-18 Hewlett Packard Company Circuit and method for limiting subthreshold leakage
US6339360B1 (en) * 2000-05-09 2002-01-15 Peavey Electronics Corporation Digital amplifier with pulse insertion circuit
DE60138382D1 (de) * 2000-05-25 2009-05-28 Nxp Bv Pwm-begrenzungsanordnung
ES2284656T3 (es) * 2000-05-25 2007-11-16 Nxp B.V. Desfasador de nivel amplificador de potencia por conmutacion.
US6661285B1 (en) 2000-10-02 2003-12-09 Holosonic Research Labs Power efficient capacitive load driving device
US8149048B1 (en) 2000-10-26 2012-04-03 Cypress Semiconductor Corporation Apparatus and method for programmable power management in a programmable analog circuit block
US6937738B2 (en) 2001-04-12 2005-08-30 Gennum Corporation Digital hearing aid system
US6633202B2 (en) 2001-04-12 2003-10-14 Gennum Corporation Precision low jitter oscillator circuit
US7076073B2 (en) * 2001-04-18 2006-07-11 Gennum Corporation Digital quasi-RMS detector
US7181034B2 (en) * 2001-04-18 2007-02-20 Gennum Corporation Inter-channel communication in a multi-channel digital hearing instrument
US20020191800A1 (en) * 2001-04-19 2002-12-19 Armstrong Stephen W. In-situ transducer modeling in a digital hearing instrument
ATE526792T1 (de) * 2001-08-15 2011-10-15 Sound Design Technologies Ltd Rekonfigurierbare hörhilfevorrichtung mit niedrigem leistungsverbrauch
EP1429455A1 (de) * 2002-12-11 2004-06-16 Dialog Semiconductor GmbH Linearisierung eines PDM-Klasse-D Verstärkers
JP4452487B2 (ja) 2003-12-01 2010-04-21 セイコーＮｐｃ株式会社 Ｄ級増幅器
US7505600B2 (en) * 2004-04-01 2009-03-17 Floyd Bell, Inc. Processor control of an audio transducer
JP4770292B2 (ja) * 2004-07-02 2011-09-14 ヤマハ株式会社 パルス幅変調増幅器
KR100608001B1 (ko) * 2004-08-17 2006-08-02 삼성전자주식회사 오디오 앰프의 전류 제한 장치 및 그 방법
US7376182B2 (en) * 2004-08-23 2008-05-20 Microchip Technology Incorporated Digital processor with pulse width modulation module having dynamically adjustable phase offset capability, high speed operation and simultaneous update of multiple pulse width modulation duty cycle registers
GB2429351B (en) * 2005-08-17 2009-07-08 Wolfson Microelectronics Plc Feedback controller for PWM amplifier
WO2007087568A2 (en) * 2006-01-24 2007-08-02 D2Audio Corporation Systems and methods for improving performance in a digital amplifier by adding an ultrasonic signal to an input audio signal
TWI336166B (en) * 2006-02-20 2011-01-11 Realtek Semiconductor Corp Digital amplifier and thereof method
US8213653B2 (en) 2006-05-10 2012-07-03 Phonak Ag Hearing device
US7965141B2 (en) * 2006-07-07 2011-06-21 Nxp B.V. Class D audio amplifier
KR101349002B1 (ko) * 2006-09-11 2014-01-09 세미컨덕터 콤포넨츠 인더스트리즈 엘엘씨 증폭 회로 및 증폭 방법
US8022756B2 (en) * 2007-05-15 2011-09-20 Qualcomm, Incorporated Output circuits with class D amplifier
US8237421B1 (en) * 2007-06-14 2012-08-07 Fairchild Semiconductor Corporation Delivering optimal charge bursts in a voltage regulator
US8416967B2 (en) * 2008-02-25 2013-04-09 Alexander George Welti Bidirectional, variable-impedance instrument-level to professional-level audio interface with signal splitters and balanced DC power
US8046192B2 (en) * 2008-02-29 2011-10-25 Smurfit-Stone Container Enterprises, Inc. Baler machine monitoring and performance interfaces, systems and methods
US7791521B2 (en) * 2008-04-01 2010-09-07 Silicon Laboratories, Inc. System and method of changing a PWM power spectrum
US7701307B2 (en) * 2008-04-01 2010-04-20 Silicon Laboratories, Inc. System and method of changing a PWM power spectrum
US7598895B1 (en) * 2008-04-01 2009-10-06 Silicon Laboratories, Inc. System and method of altering a PWM carrier power spectrum
DE102008040291A1 (de) * 2008-07-09 2010-01-14 Robert Bosch Gmbh Audioverstärker sowie Verfahren zur Umkonfiguration eines Audioverstärkers
DE102008042377A1 (de) * 2008-09-25 2010-04-01 Robert Bosch Gmbh Audioverstärker mit Lastanpassung sowie Verfahren zur Lastanpassung des Audioverstärkers
JP5442636B2 (ja) * 2008-12-10 2014-03-12 ローム株式会社 Ｄ級電力増幅器
MX2009000339A (es) * 2009-01-09 2010-07-15 Univ Autonoma Del Estado De Me Circuito electronico de proteccion de baja complejidad para evitar la sobre-descarga de las baterias automotrices.
TWI378636B (en) * 2009-02-18 2012-12-01 Novatek Microelectronics Corp Frequency dividing circuit
JP5157960B2 (ja) * 2009-02-27 2013-03-06 ヤマハ株式会社 Ｄ級増幅器
IT1394705B1 (it) * 2009-05-29 2012-07-13 St Microelectronics Srl Divisore di un segnale multifase.
WO2011103929A1 (en) 2010-02-26 2011-09-01 Widex A/S Hearing aid with adaptive bulk biasing power management
US8130128B2 (en) 2010-03-30 2012-03-06 Silicon Laboratores Inc. System and method for generating shaped noise
DK2378793T3 (da) * 2010-04-14 2013-05-13 Gn Resound As Høreindretning, der er konfigureret til trådløs kommunikation i bursts, og en fremgangsmåde til levering af strøm til denne
EP2387149B1 (de) 2010-04-29 2012-11-07 Dialog Semiconductor GmbH Überstromschutz für einen Klasse-D-Audioverstärker
JP6604708B2 (ja) 2013-10-02 2019-11-13 日東電工株式会社 補聴器
CN103905006B (zh) 2014-03-28 2017-10-24 深圳创维－Rgb电子有限公司 一种具有占空比限制功能的d类功放芯片及其装置
JP2021129255A (ja) * 2020-02-17 2021-09-02 ミツミ電機株式会社 パルス信号送信回路

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3383546A (en) * 1965-01-15 1968-05-14 Navy Usa Brightiness control circuitry for direct view storage tubes
DE3324711C2 (de) * 1983-07-08 1986-07-24 Hewlett-Packard GmbH, 7030 Böblingen Impulsgenerator
US4689819B1 (en) * 1983-12-08 1996-08-13 Knowles Electronics Inc Class D hearing aid amplifier
CA2009775C (en) * 1989-03-04 1994-12-06 Brian E. Attwood Audio amplifier with phase modulated pulse width modulation
DE3907410C1 (de) * 1989-03-08 1990-10-04 Ant Nachrichtentechnik Gmbh, 7150 Backnang, De
US5220203A (en) * 1990-11-21 1993-06-15 Analogic Corporation Variable pulse width precision pulse generator
US5247581A (en) * 1991-09-27 1993-09-21 Exar Corporation Class-d bicmos hearing aid output amplifier

Also Published As

Publication number Publication date
JPH06319197A (ja) 1994-11-15
EP0590903A1 (de) 1994-04-06
ATE164033T1 (de) 1998-03-15
DE69317344D1 (de) 1998-04-16
US5389829A (en) 1995-02-14
US5506532A (en) 1996-04-09
EP0590903B1 (de) 1998-03-11

Similar Documents

Publication Publication Date Title
DE69317344D1 (de) Ausgangsbegrenzer für einen Klasse-D BICMOS-Hörgeräteausgangsverstärker
US6175272B1 (en) Pulse—width modulation system
JP2807853B2 (ja) 出力回路
US5523715A (en) Amplifier arrangement and method and voltage controlled amplifier and method
CA2055410A1 (en) Composite bridge amplifier
ATE154180T1 (de) Schaltungsanordnung mit einem schaltverstärker
DE69214767D1 (de) Klasse-D Ausgangsverstärker in BICMOS für Hörhilfegerät
CA2102661A1 (en) Differential Amplifier Circuit Using Quadritail Circuit
MY137107A (en) Power amplifier
CA2189851A1 (en) Voltage Regulator
KR101053011B1 (ko) 디지털 증폭기
KR20040051561A (ko) Ｐｄｍ 클래스-ｄ 증폭기의 선형화
JP2959810B2 (ja) パルス幅変調増幅器
JP3130919B2 (ja) パルス幅変調増幅器
US6313697B1 (en) Device for amplifying signals
JP2906564B2 (ja) Ｐｗｍ増幅器
JPS62165083A (ja) 電磁弁の駆動回路
JPS56134829A (en) Pulse width modulating circuit
JP2839558B2 (ja) Ｐｗｍ駆動回路
KR970055447A (ko) 전류 감지와 전원 공급을 겸하는 게이트 구동회로
DK0504460T3 (da) Høreapparat med et i koblingsdrift arbejdende udgangstrin
DK0576700T3 (da) Høreapparat
SU964969A1 (ru) Широтно-импульсный усилитель
JPH0260089B2 (de)
SU849408A1 (ru) Устройство дл управлени преобразова-ТЕлЕМ

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee