• DocumentCode
    868181
  • Title

    Rail-to-rail amplifier input stage with constant gm and commonmode elimination

  • Author

    Fischer, T.W. ; Karsilayan, A.I.

  • Author_Institution
    Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
  • Volume
    38
  • Issue
    24
  • fYear
    2002
  • fDate
    11/21/2002 12:00:00 AM
  • Firstpage
    1491
  • Lastpage
    1492
  • Abstract
    A new scheme for achieving rail-to-rail input to an amplifier is introduced. Constant gm and common mode removal is obtained by using a single input differential pair and tunable DC level shifters via multiple input floating gate transistors. The feedback circuitry basically fixes the common mode of the amplifier, resulting in consistent and stable operation for rail-to-rail inputs and a high common mode rejection ratio.
  • Keywords
    CMOS analogue integrated circuits; circuit tuning; differential amplifiers; feedback amplifiers; operational amplifiers; common mode elimination; constant gm; constant transconductance; feedback circuitry; high CMRR; high common mode rejection ratio; multiple input floating gate transistors; op-amp input stage; rail-to-rail amplifier input stage; single input differential pair; stable operation; tunable DC level shifters;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:20021054
  • Filename
    1106070
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=868181