• DocumentCode
    1704441
  • Title

    A 120dB dynamic range 400mW class-D speaker driver with 4th-order PWM modulator

  • Author

    Wang, Minsheng ; Jiang, Xicheng ; Song, Jungwoo ; Brooks, Todd

  • Author_Institution
    Broadcom Corp., Irvine, CA, USA
  • fYear
    2009
  • Firstpage
    13
  • Lastpage
    16
  • Abstract
    A 400 mW class-D speaker driver is implemented in 65 nm CMOS technology, using a 4th-order digital PWM modulator to eliminate the DAC and minimize the effects of analog imperfection. It achieves 120 dB dynamic range with up to 88% power efficiency while driving an 8 Omega speaker load.
  • Keywords
    CMOS integrated circuits; amplifiers; driver circuits; pulse width modulation; 4th-order digital PWM modulator; CMOS technology; class-D speaker driver; power 400 mW; resistance 8 ohm; size 65 nm; CMOS technology; Digital modulation; Dynamic range; Pulse width modulation;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Custom Integrated Circuits Conference, 2009. CICC '09. IEEE
  • Conference_Location
    San Jose, CA
  • Print_ISBN
    978-1-4244-4071-9
  • Electronic_ISBN
    978-1-4244-4073-3
  • Type

    conf

  • DOI
    10.1109/CICC.2009.5280912
  • Filename
    5280912
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1704441