High-Precision Differential-Input Buffered and External Transconductance Amplifier for Low-Voltage Low-Power Applications

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• 作者：Fabian Khateb (1)
  Firat Ka?ar (2)
  Nabhan Khatib (1)
  David Kubánek (3)
  
• 关键词：Bulk ; driven MOST ; Current ; voltage ; and mixed ; mode applications ; Low ; voltage low ; power analog circuit design ; Universal active element ; Oscillator
• 刊名：Circuits, Systems, and Signal Processing
• 出版年：2013
• 出版时间：April 2013
• 年：2013
• 卷：32
• 期：2
• 页码：453-476
• 全文大小：1,213 KB
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• 作者单位：Fabian Khateb (1)
  Firat Ka?ar (2)
  Nabhan Khatib (1)
  David Kubánek (3)
  
  1. Department of Microelectronics, Brno University of Technology, Technicka 10, Brno, Czech Republic
  2. Department of Electrical and Electronics Engineering, Istanbul University, Istanbul, Turkey
  3. Department of Telecommunications, Brno University of Technology, Purkynova 118, Brno, Czech Republic
  
• ISSN：1531-5878

文摘

Recently, the demand for low-voltage low-power integrated circuits design has grown dramatically. For battery-operated devices both the supply voltage and the power consumption have to be lowered in order to prolong the battery life. This paper presents an attractive approach to designing a low-voltage low-power high-precision differential-input buffered and external transconductance amplifier, DBeTA, based on the bulk-driven technique. The proposed DBeTA possesses rail-to-rail voltage swing capability at a low supply voltage of ±400 mV and consumes merely 62 μW. The proposed circuit is a universal active element that offers more freedom during the design of current-, voltage-, or mixed-mode applications. The proposed circuit is particularly interesting for biomedical applications requiring low-voltage low-power operation capability where the processing signal frequency is limited to a few kilohertz. An oscillator circuit employing a minimum number of active and passive components has been described in this paper as one of many possible applications. The circuit contains only a single active element DBeTA, two capacitors, and one resistor, which is very attractive for integrated circuit implementation. PSpice simulation results using the 0.18 μm CMOS technology from TSMC are included to prove the unique results.