• DocumentCode
    2719452
  • Title

    A low cost, digital microphone chip

  • Author

    Houghton, Andy D. ; Mawer, John R. ; Ivey, Peter A.

  • Author_Institution
    Dept. of Electron. & Electr. Eng., Sheffield Univ., UK
  • fYear
    1995
  • fDate
    1-4 May 1995
  • Firstpage
    169
  • Lastpage
    172
  • Abstract
    This paper describes a chip that can extract high resolution motion from a surface which is illuminated with laser light. There are many applications for this technology including a fully digital microphone that converts sound into a digital output without A/D conversion of the sound signal. The chip contains about 100,000 transistors, and is fabricated using a 1 μ double metal, single poly process. The complete chip occupies an area of about 25 mm2
  • Keywords
    application specific integrated circuits; microphones; 1 micron; 25 mm; digital microphone chip; double metal single poly process; laser light illumination; sound signal; surface motion; Costs; Laser noise; Microphones; Optical distortion; Optical noise; Optical signal processing; Optical surface waves; Signal resolution; Speckle; Surface emitting lasers;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Custom Integrated Circuits Conference, 1995., Proceedings of the IEEE 1995
  • Conference_Location
    Santa Clara, CA
  • Print_ISBN
    0-7803-2584-2
  • Type

    conf

  • DOI
    10.1109/CICC.1995.518160
  • Filename
    518160
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2719452