• DocumentCode
    915781
  • Title

    Simple rail-to-rail low-voltage constant-transconductance CMOS input stage in weak inversion

  • Author

    Wassenaar, R.F. ; Wiegerink, R.J.

  • Volume
    29
  • Issue
    12
  • fYear
    1993
  • fDate
    6/10/1993 12:00:00 AM
  • Firstpage
    1145
  • Lastpage
    1147
  • Abstract
    A CMOS input stage for operational amplifiers is presented. To obtain a rail-to-rail input range an nMOS and a pMOS differential pair are driven in parallel. Both differential pairs operate in weak inversion. With the help of only four additional transistors a transconductance gm is obtained which is independent of the common input voltage. This extension does not increase the minimum required supply voltage.
  • Keywords
    CMOS integrated circuits; linear integrated circuits; operational amplifiers; CMOS input stage; constant-transconductance; nMOS pMOS differential pair; operational amplifiers; rail-to-rail input range; weak inversion;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:19930764
  • Filename
    220860
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=915781