publication . Contribution for newspaper or weekly magazine . 2005

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

Citakovic, J; Nielsen, I. Riis; Nielsen, Jannik Hammel; Asbeck, P; Andreani, Pietro;
Open Access English
  • Published: 01 Jan 2005
  • Publisher: IEEE
  • Country: Denmark
Abstract
A two-stage amplifier, operational at 0.8V and drawing 7μA, has been integrated in a standard digital 0.18μm CMOS process. Rail-to-rail operations at the input are enabled by complementary transistor pairs with gm 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, 100kΩload. Both input and output stage transistors are biased in weak inversion.
Subjects
ACM Computing Classification System: Hardware_INTEGRATEDCIRCUITSHardware_ARITHMETICANDLOGICSTRUCTURES
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Contribution for newspaper or weekly magazine . 2005
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