Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Potentiostat circuits for amperometric sensor

전류법 기반 센서의 정전압 분극 장치 회로

  • Lim, Shin-Il (Dept. of Computer Engineering, Seokyeong University)
  • Published : 2009.01.31
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Abstract

A simple and new CMOS potentiostat circuit for amperometric sensor is described. To maintain a constant potential between the reference and working electrodes, only one differential difference amplifier (DDA) is needed in proposed design, while conventional potentiosatat requires at least 2 operational amplifiers and 2 resistors, or more than 3 operational amplifiers and 4 resistors for low voltage CMOS integrated potentiostat. The DDA with rail-to-rail design not only enables the full range operation to supply voltage but also provides simple potentiostat system with small hardwares and low power consumption.

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References

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