ATE299310T1 - Schaltung zur signalverarbeitung - Google Patents

Schaltung zur signalverarbeitung

Info

Publication number
ATE299310T1
ATE299310T1 AT02722441T AT02722441T ATE299310T1 AT E299310 T1 ATE299310 T1 AT E299310T1 AT 02722441 T AT02722441 T AT 02722441T AT 02722441 T AT02722441 T AT 02722441T AT E299310 T1 ATE299310 T1 AT E299310T1
Authority
AT
Austria
Prior art keywords
signal
stage
difference
coupled
input
Prior art date
Application number
AT02722441T
Other languages
English (en)
Inventor
Robert David Watts
John Alexander Westlake
Original Assignee
Robert David Watts
John Alexander Westlake
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 Robert David Watts, John Alexander Westlake filed Critical Robert David Watts
Application granted granted Critical
Publication of ATE299310T1 publication Critical patent/ATE299310T1/de

Links

Classifications

    • 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
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/331—Sigma delta modulation being used in an amplifying circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Selective Calling Equipment (AREA)
  • Stereo-Broadcasting Methods (AREA)
AT02722441T 2001-04-27 2002-04-22 Schaltung zur signalverarbeitung ATE299310T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0110340.7A GB0110340D0 (en) 2001-04-27 2001-04-27 A signal processing circuit
PCT/GB2002/001815 WO2002089321A1 (en) 2001-04-27 2002-04-22 A signal processing circuit

Publications (1)

Publication Number Publication Date
ATE299310T1 true ATE299310T1 (de) 2005-07-15

Family

ID=9913570

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02722441T ATE299310T1 (de) 2001-04-27 2002-04-22 Schaltung zur signalverarbeitung

Country Status (7)

Country Link
US (1) US7046080B2 (de)
EP (1) EP1384317B1 (de)
JP (1) JP2005506727A (de)
AT (1) ATE299310T1 (de)
DE (1) DE60204960D1 (de)
GB (1) GB0110340D0 (de)
WO (1) WO2002089321A1 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10327620B4 (de) * 2003-01-31 2014-09-11 Lantiq Deutschland Gmbh Vorrichtung und Verfahren zur digitalen Pulsweiten-Modulation
SE0300780D0 (sv) * 2003-03-24 2003-03-24 Bang & Olufsen Icepower As Digital pulse width controlled oscillation modulator
US7038535B2 (en) * 2003-03-29 2006-05-02 Wai Laing Lee PWM digital amplifier with high-order loop filter
US6847257B2 (en) * 2003-05-23 2005-01-25 Maxim Integrated Products, Inc. Efficient minimum pulse spread spectrum modulation for filterless class D amplifiers
US20040232978A1 (en) * 2003-05-23 2004-11-25 Easson Craig Alexander Filterless class D amplifiers using spread spectrum PWM modulation
US7271650B2 (en) * 2004-03-26 2007-09-18 Asp Technologies PWM digital amplifier with high-order loop filter
JP4622423B2 (ja) * 2004-09-29 2011-02-02 日本テキサス・インスツルメンツ株式会社 パルス幅変調信号発生回路
GB2419757B (en) 2004-11-01 2008-11-26 Zetex Plc A digital amplifier
WO2008033116A1 (en) * 2006-09-11 2008-03-20 Semiconductor Components Industries, L.L.C. Amplification circuit and method therefor
US7714675B2 (en) * 2006-12-05 2010-05-11 Broadcom Corporation All digital Class-D modulator and its saturation protection techniques
US8022756B2 (en) * 2007-05-15 2011-09-20 Qualcomm, Incorporated Output circuits with class D amplifier
US8046192B2 (en) * 2008-02-29 2011-10-25 Smurfit-Stone Container Enterprises, Inc. Baler machine monitoring and performance interfaces, systems and methods
US7598895B1 (en) * 2008-04-01 2009-10-06 Silicon Laboratories, Inc. System and method of altering a PWM carrier power spectrum
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
US8971444B2 (en) * 2009-08-05 2015-03-03 Rajendra Kumar Generalized frequency modulation
US8130128B2 (en) 2010-03-30 2012-03-06 Silicon Laboratores Inc. System and method for generating shaped noise
JP6510199B2 (ja) * 2014-08-19 2019-05-08 ローム株式会社 スイッチング回路、オーディオアンプ集積回路、電子機器、電気音響変換素子の駆動方法
US10797659B2 (en) * 2018-10-15 2020-10-06 Semiconductor Components Industried, Llc Audio amplifier having multiple sigma-delta modulators to drive an output load

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57170606A (en) 1981-04-10 1982-10-20 Sony Corp Amplifying circuit for pulse-width-modulated signal
JPS6369465A (ja) * 1986-09-05 1988-03-29 Toshiba Corp 電力変換器用のスイツチング信号発生方法
US4843339A (en) 1987-10-28 1989-06-27 Burr-Brown Corporation Isolation amplifier including precision voltage-to-duty-cycle converter and low ripple, high bandwidth charge balance demodulator
JPH0785524B2 (ja) * 1988-12-28 1995-09-13 パイオニア株式会社 パルス幅変調増幅回路
US5218315A (en) 1992-01-06 1993-06-08 Infinity Systems, Inc. Switching amplifier
US5352986A (en) 1993-01-22 1994-10-04 Digital Fidelity, Inc. Closed loop power controller
DE69418371T2 (de) 1993-03-17 1999-10-21 Kabushiki Kaisha Toshiba, Kawasaki Schaltung zur Pulsweitenmodulation
DE19619208A1 (de) * 1996-05-11 1997-11-13 Klugbauer Heilmeier Josef Digitaler Verstärker
US5777512A (en) 1996-06-20 1998-07-07 Tripath Technology, Inc. Method and apparatus for oversampled, noise-shaping, mixed-signal processing
US5805020A (en) * 1996-06-27 1998-09-08 Harris Corporation Silent start class D amplifier
WO1998019391A2 (en) * 1996-10-31 1998-05-07 Bang & Olufsen A/S Pulse modulation power amplifier with enhanced cascade control method
CN1258393A (zh) 1998-01-22 2000-06-28 皇家菲利浦电子有限公司 Pwm放大器
US6064259A (en) * 1998-07-24 2000-05-16 Nikon Corporation Of America High power, high performance pulse width modulation amplifier
EP1049247B1 (de) * 1999-04-27 2005-08-03 STMicroelectronics S.r.l. Klasse D Verstärker mit hoher Bandbreite
US7038535B2 (en) * 2003-03-29 2006-05-02 Wai Laing Lee PWM digital amplifier with high-order loop filter

Also Published As

Publication number Publication date
EP1384317A1 (de) 2004-01-28
JP2005506727A (ja) 2005-03-03
WO2002089321A1 (en) 2002-11-07
EP1384317B1 (de) 2005-07-06
DE60204960D1 (de) 2005-08-11
GB0110340D0 (en) 2001-06-20
US20050054307A1 (en) 2005-03-10
US7046080B2 (en) 2006-05-16

Similar Documents

Publication Publication Date Title
DE60204960D1 (de) Schaltung zur signalverarbeitung
TW200419816A (en) Optical signal receiving circuit and optical signal receiving semiconductor device
EP0756384A3 (de) Verfahren zur Erhöhung der Stabilität eines Sigma-Delta-Modulators unter Verwendung eines Zittersignals
KR970013651A (ko) 개선된 d급 증폭기 및 방법
ATE247340T1 (de) Verfahren und gerät zur blindseparierung von signalen
ATE462224T1 (de) Differenzeingangsverstärker mit weitem gleichtaktbereich und verfahren
DE69916500D1 (de) Pegelverschiebungsschaltung
WO2004059848A3 (en) Modulation of a digital input signal using a digital signal modulator and signal splitting
AU2002229135A1 (en) Apparatus and methods for monitoring and controlling power amplifier linearity using detected fundamental and harmonic components
ATE277490T1 (de) A/d umwandler mit integrierter vorspannung für mikrofon
TW200637136A (en) Clock circuit and method
ATE416513T1 (de) Datenumsetzer mit ternärimpulsbreitenmodulations- ausgangsstufen und verfahren und systeme damit
CA2402704A1 (en) System and method of producing direct audio from a power supply
TW200501621A (en) Spectrum diffusion clock generating device
WO2002013397A3 (en) Constrained-envelope transmitter and method therefor
DE59310033D1 (de) Hörgerät
TW200618464A (en) Low noise audio amplifier
WO2002044889A3 (en) Apparatus and method for odd integer frequency division
AU2003260008A1 (en) System and method for establishing the input impedance of an amplifier in a stacked configuration
WO2004012333A3 (en) Method and apparatus for common-mode level shifting
EP1427101A4 (de) Schaltverstärkungsvorrichtung
AU2002308163A1 (en) R.f. output power control
ATE460770T1 (de) Blind-linearisierung unter anwendung von kreuz- modulation
AU2003260475A1 (en) Dc-compensation loop for variable gain amplifier
ATE430401T1 (de) Frequenzmodulator unter verwendung geschalteter kapazitäten

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties