• DocumentCode
    1171977
  • Title

    A fast-settling op amp with low supply current

  • Author

    Widlar, Robert J. ; Yamatake, Mineo

  • Volume
    24
  • Issue
    3
  • fYear
    1989
  • fDate
    6/1/1989 12:00:00 AM
  • Firstpage
    796
  • Lastpage
    802
  • Abstract
    A dual-operational amplifier that will settle to 0.01% in 400 ns with a 10-V output step is discussed. Quiescent operating current is 3 mA per amplifier. A low-cost, 40-V, bipolar process with junction isolation and complementary transistors having fT~150 MHz is used. The design obtains inherent DC accuracy by using an undergenerated bipolar input stage operated with 20-μA collector currents
  • Keywords
    bipolar integrated circuits; operational amplifiers; 20 muA; 40 V; 400 ns; collector currents; complementary transistors; dual-operational amplifier; fast-settling op amp; junction isolation; output step; quiescent operating current; supply current; undergenerated bipolar input stage; Bandwidth; Bipolar transistors; Capacitance; Current supplies; Dynamic range; FETs; Low voltage; Noise generators; Operational amplifiers; Transconductance;
  • fLanguage
    English
  • Journal_Title
    Solid-State Circuits, IEEE Journal of
  • Publisher
    ieee
  • ISSN
    0018-9200
  • Type

    jour

  • DOI
    10.1109/4.32042
  • Filename
    32042
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1171977