Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Compact Rail to Rail CMOS Voltage Follower

  • Boonyaporn, Patt (Department of Electronics, Faculty of Engineering, King Mongkut′s Institute of Technology Ladkrabang(KMITL)) ;
  • Kasemsuwan, Varakorn (Department of Electronics, Faculty of Engineering, King Mongkut′s Institute of Technology Ladkrabang(KMITL))
  • Published : 2002.07.01
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Abstract

A compact rail to rail CMOS voltage follower is presented. The circuit is based on the symmetrical class AB voltage follower and can operate under supply voltages of ${\pm}$ 1.5 V. The proposed circuit has power dissipation of 5.2㎽ under quiescent condition and can drive ${\pm}$1.25 V to 250$\Omega$ load with a total harmonic distortion of less than 0.5 percent and cut off frequency of 237 ㎒. Although simple, the proposed circuit enables the output transistors to drive load efficiently.

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