• DocumentCode
    3733949
  • Title

    A 24-bit multi-functional sensor analog front end employing low noise biasing technique with 8.2nV/?Hz input referred noise

  • Author

    Masahiko Maruyama;Shigenari Taguchi;Masafumi Yamanoue;Kunihiko Iizuka

  • Author_Institution
    Electronic Components and Devices Division, SHARP Corporation, Tenri, Nara, Japan
  • fYear
    2015
  • Firstpage
    1
  • Lastpage
    4
  • Abstract
    An Analog Front End (AFE) for a multi-functional environmental sensor is proposed. The IC consists of a 8.2nV/VHz input referred noise, 0.22mm area instrumentation amplifier, a 25aC/√Hz, 0.12mm2 charge amplifier, and a 24bit continuous-time delta-sigma ADC, which are designed with a weak inversion biasing technique. The AFE has been fabricated in a 0.18μm CMOS process with 4.5mm2 die area. The current consumption at 2.56kHz output data rate is 2.5mA, reducing to 2μA at 0.01Hz.
  • Keywords
    "CMOS integrated circuits","Instruments","Pressure sensors","Humidity","CMOS technology","Noise measurement","Solid state circuits"
  • Publisher
    ieee
  • Conference_Titel
    Solid-State Circuits Conference (A-SSCC), 2015 IEEE Asian
  • Type

    conf

  • DOI
    10.1109/ASSCC.2015.7387485
  • Filename
    7387485
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3733949