• DocumentCode
    439622
  • Title

    A 250 W audio amplifier with straightforward digital input-PWM output conversion

  • Author

    Grosso, A. ; Botti, E. ; Stefani, F. ; Ghioni, M.

  • Author_Institution
    ST Microelectronics, MI, Italy
  • fYear
    2001
  • fDate
    18-20 Sept. 2001
  • Firstpage
    225
  • Lastpage
    228
  • Abstract
    A switching audio amplifier which features high output power (250 W), high efficiency (90 %) while performing a 96 dB dynamic range is presented. The amplifier is based on a single-chip integrated circuit that converts a digital input data stream at frequency fsinto an 8fsPulse Width Modulated (PWM) output power signal, without using intermediate filter. An embedded I2S input interface is capable of receiving digital words up to 24-bit at a rate fsranging from 32 kHz to 48 kHz. The chip is fabricated with a 0.6 µm Bipolar-CMOS-DMOS (BCD) technology and assembled in a surface-mount package. Due to the high output power, it drives four external power MOS transistors.
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Solid-State Circuits Conference, 2001. ESSCIRC 2001. Proceedings of the 27th European
  • Conference_Location
    Villach, Austria
  • Type

    conf

  • Filename
    1471374
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=439622