Abstract
This paper reports a linear, low power, and compact CMOS based potentiostat for vertically aligned carbon nanofibers (VACNF) based amperometric glucose sensors. The CMOS based potentiostat consists of a single-ended potential control unit, a low noise common gate difference-differential pair transimpedance amplifier and a low power VCO. The potentiostat current measuring unit can detect electrochemical current ranging from 500 nA to 7 μA from the VACNF working electrodes with high degree of linearity. This current corresponds to a range of glucose, which depends on the fiber forest density. The potentiostat consumes 71.7 μW of power from a 1.8 V supply and occupies 0.017 μm2 of chip area realized in a 0.18 μm standard CMOS process.
Original language | English |
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Article number | 7497511 |
Pages (from-to) | 807-816 |
Number of pages | 10 |
Journal | IEEE Transactions on Biomedical Circuits and Systems |
Volume | 10 |
Issue number | 4 |
DOIs | |
State | Published - Aug 2016 |
Keywords
- Amperometry
- glucose monitoring
- potentiostat
- transimpedance amplifier
- vertically aligned carbon nanofibers