• DocumentCode
    2791273
  • Title

    A self oscillating class D audio amplifier with 0.0012% THD+N and 116.5 dB dynamic range

  • Author

    Lu, Jingxue ; Gharpurey, Ranjit

  • Author_Institution
    Dept. of Electr. & Comput. Eng., Univ. of Texas at Austin, Austin, TX, USA
  • fYear
    2010
  • fDate
    19-22 Sept. 2010
  • Firstpage
    1
  • Lastpage
    4
  • Abstract
    A low distortion third-order self-oscillating class D audio amplifier is integrated in a 0.7-μm CMOS process. It can deliver 1.4 W into an 8 Ω load with 5 V power supply. The presented amplifier eliminates the requirement for a high quality carrier. It achieves a dynamic range (DR) of 116.5 dB, and a peak THD+N of 0.0012% for a 1 kHz sinusoidal input. The efficiency is 84.5%. The area of the amplifier is 6 mm2.
  • Keywords
    CMOS analogue integrated circuits; audio-frequency amplifiers; harmonic distortion; CMOS process; THD+N; frequency 1 kHz; low distortion third-order audio amplifier; power 1.4 W; resistance 8 ohm; self oscillating class D audio amplifier; size 0.7 mum; voltage 5 V; Hysteresis; Logic gates; Modulation; Power generation; Signal to noise ratio; Switching frequency;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Custom Integrated Circuits Conference (CICC), 2010 IEEE
  • Conference_Location
    San Jose, CA
  • ISSN
    0886-5930
  • Print_ISBN
    978-1-4244-5758-8
  • Type

    conf

  • DOI
    10.1109/CICC.2010.5617615
  • Filename
    5617615
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2791273