• DocumentCode
    807859
  • Title

    A compact bipolar class-HB output stage using 1-V power supply

  • Author

    Thus, Frank J M

  • Author_Institution
    Philips Res. Lab., Eindhoven, Netherlands
  • Volume
    27
  • Issue
    12
  • fYear
    1992
  • fDate
    12/1/1992 12:00:00 AM
  • Firstpage
    1718
  • Lastpage
    1722
  • Abstract
    A compact circuit topology for the realization of a bipolar class-HB output stage operating down to 0.9 V is presented. This compact topology is obtained by using the same path for the signal as well as for the definition of the bias current in the output transistors. The output amplifier is used to drive a 64-Ω load, representing the series connection of two telephones in a headphone set. An output signal of 600 mVp-p across the 64-Ω load at a supply voltage of 1.3 V shows a total harmonic distortion plus noise better than -60 dB. The amplifier uses 0.14-mm2 chip area and is realized in a 2.5-μm BiCMOS process including vertical p-n-p transistors
  • Keywords
    BiCMOS integrated circuits; audio-frequency amplifiers; linear integrated circuits; 0.9 to 1.3 V; 1-V power supply; 2.5 micron; BiCMOS process; bipolar class-HB output stage; compact circuit topology; vertical p-n-p transistors; Batteries; Circuit topology; Current supplies; Diodes; Headphones; Low voltage; Power supplies; Stacking; Telephony; Total harmonic distortion;
  • fLanguage
    English
  • Journal_Title
    Solid-State Circuits, IEEE Journal of
  • Publisher
    ieee
  • ISSN
    0018-9200
  • Type

    jour

  • DOI
    10.1109/4.173097
  • Filename
    173097
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=807859