• DocumentCode
    649141
  • Title

    A high input impedance low-noise instrumentaion amplifier with JFET input

  • Author

    Tan Yang ; Junjie Lu ; Holleman, Jeremy

  • Author_Institution
    Dept. of Electr. Eng. & Comput. Sci., Univ. of Tennessee, Knoxville, TN, USA
  • fYear
    2013
  • fDate
    4-7 Aug. 2013
  • Firstpage
    173
  • Lastpage
    176
  • Abstract
    This paper presents a high input impedance instrumentation amplifier with low-noise low-power operation. JFET input-pair is employed instead of CMOS to significantly reduce the flicker noise. This amplifier features high input impedance (15.3 GΩ∥1.39 pF) by using current feedback technique and JFET input. This amplifier has a mid-band gain of 39.9 dB, and draws 3.65 μA from a 2.8-V supply and exhibits an input-referred noise of 3.81 μVrms integrated from 10 mHz to 100 kHz, corresponding to a noise efficiency factor (NEF) of 3.23.
  • Keywords
    instrumentation amplifiers; interference suppression; junction gate field effect transistors; low noise amplifiers; low-power electronics; EF; JFET input-pair; current 3.65 muA; current feedback technique; flicker noise reduction; gain 39.9 dB; high input impedance low-noise instrumentation amplifier; low-power operation; noise efficiency factor; voltage 2.8 V;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Circuits and Systems (MWSCAS), 2013 IEEE 56th International Midwest Symposium on
  • Conference_Location
    Columbus, OH
  • ISSN
    1548-3746
  • Type

    conf

  • DOI
    10.1109/MWSCAS.2013.6674613
  • Filename
    6674613
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=649141