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A Low-Power Wide-Range I-V Converter for Amperometric Sensing Applications

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1 Author(s)
Rodriguez-Villegas, E. ; Dept. of Electr. & Electron. Eng., Imperial Coll. London, London, UK

This paper presents for the first time experimental results of a current-to-voltage converter that can be used for amperometric sensing of currents ranging from 1 pA to 1 muA. The design strategy is optimized to achieve low power levels and, hence, make the circuit suitable for use in a wearable or implantable sensor. The power reduction is mostly achieved by combining transistors operating in the weak inversion region with floating-gate metal-oxide semiconductor devices and three different gain settings. The power consumption under normal operation is 9.82 muW.

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Biomedical Circuits and Systems, IEEE Transactions on  (Volume:3 ,  Issue: 6 )