• DocumentCode
    3664772
  • Title

    A power-efficient current-feedback instrumentation amplifier for precision bridge readout

  • Author

    Moaaz Ahmed;Saqib Mohamad;Amine Bermak

  • Author_Institution
    Dept. of ECE, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
  • fYear
    2015
  • fDate
    6/1/2015 12:00:00 AM
  • Firstpage
    555
  • Lastpage
    558
  • Abstract
    A current-feedback instrumentation amplifier (CFIA) for precision bridge-readout intended for MEMs flow sensor is presented. The proposed CFIA is chopped to bring input-referred offset below 12μV and flicker-noise corner around 2mHz. Implemented in chartered 0.18μm CMOS process, the CFIA draws 250μA supply current and achieves a competitive noise efficiency factor (NEF) of 30.5. The low-power consumption is attributed to the gm/ID based design methodology adopted in designing the folded-cascode amplifiers while considering careful trade-offs between power, thermal noise and input-referred offset.
  • Keywords
    "Noise","Instruments","Bridge circuits","CMOS integrated circuits","Design methodology","Solid state circuits","CMOS process"
  • Publisher
    ieee
  • Conference_Titel
    Electron Devices and Solid-State Circuits (EDSSC), 2015 IEEE International Conference on
  • Print_ISBN
    978-1-4799-8362-9
  • Type

    conf

  • DOI
    10.1109/EDSSC.2015.7285174
  • Filename
    7285174
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3664772