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Conference Poster Year : 2007

An ultra-low voltage high gain operational transconductance amplifier for biomedical applications

F. Bautista
  • Function : Author
S.O. Martınez
  • Function : Author
G. Dieck
  • Function : Author

Abstract

A novel differential-input single-output Operational Transconductance Amplifier (OTA) is presented in this paper. The topology proposed consists of an input stage based on a folded cascoded amplifier, and an output stage based on a current source amplifier and a bulk-driven current mirror. The simulations show that the amplifier has a 1.94¹W power dissipation, 92dB open-loop DC gain, a unit gain-bandwidth of 390KHz, a low noise between 537Hz to 390KHz and operates at 0.5V rail-to-rail supply voltage. It was designed for a 0.35¹m CMOS process. The OTA's performance satisfies the required parameters for its implementation in biomedical portable devices.
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Dates and versions

in2p3-00192566 , version 1 (28-11-2007)

Identifiers

  • HAL Id : in2p3-00192566 , version 1

Cite

F. Bautista, S.O. Martınez, G. Dieck, O. Rossetto. An ultra-low voltage high gain operational transconductance amplifier for biomedical applications. 2007 Workshop on Design and Architectures for Signal and Image Processing (DASIP), Nov 2007, Grenoble, France. a paraitre, 2007. ⟨in2p3-00192566⟩
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