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A 0.8V, 7uA, rail-to-rail input/output, constant Gm operational amplifier in standard digital 0.18um CMOS

  • Jelena Citakovic
  • Ivan R. Nielsen
  • Jannik H. Nielsen
  • Per Asbeck
  • Pietro Andreani
Publiceringsår: 2005
Språk: Engelska
Sidor: 54-57
Publikation/Tidskrift/Serie: 23rd NORCHIP Conference, 2005.
Dokumenttyp: Konferensbidrag


A two-stage amplifier, operational at 0.8V and drawing 7/spl mu/A, has been integrated in a standard digital 0.18/spl mu/m CMOS process. Rail-to-rail operations at the input are enabled by complementary transistor pairs with g/sub m/ control. The efficient rail-to-rail output stage is biased in class AB. The measured DC gain of the amplifier is 75dB, and the unity-gain frequency is 870kHz with a 12pF, 100k/spl Omega/load. Both input and output stage transistors are biased in weak inversion.



  • Technology and Engineering


21-22 Nov. 2005
  • ISBN: 1-4244-0064-3

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