• DocumentCode
    3682342
  • Title

    A 13.2b optical proximity sensor system with 130klx ambient light rejection capable of heart rate and blood oximetry monitoring

  • Author

    Luca Sant;Andrea Fant;Snezana Stojanović;Simone Fabbro;Jose Luis Ceballos

  • Author_Institution
    Infineon Technologies Austria AG Villach, Austria
  • fYear
    2015
  • Firstpage
    372
  • Lastpage
    375
  • Abstract
    A system for measuring optical proximity based on reflection of modulated light is presented. Its novel input stage topology comprising an AC coupled TIA and a two stage DC rejection circuit based on a synthesized inductive impedance, provides readouts with a resolution better than 13.2 ENOB. This allows the sensor system to be used without modifications also for heart rate and blood oximetry monitoring.
  • Keywords
    "Photodiodes","Optical variables measurement","Accuracy","Photoconductivity","Light emitting diodes","Modulation","Optical reflection"
  • Publisher
    ieee
  • Conference_Titel
    European Solid-State Circuits Conference (ESSCIRC), ESSCIRC 2015 - 41st
  • ISSN
    1930-8833
  • Print_ISBN
    978-1-4673-7470-5
  • Type

    conf

  • DOI
    10.1109/ESSCIRC.2015.7313905
  • Filename
    7313905
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3682342