@inproceedings{db5e4154b32442e8b36489620d3cc3c0,
title = "A Power-efficient Bidirectional Potentiostat-based Readout IC for Wide-range Electrochemical Sensing",
abstract = "This paper presents a low-power electrochemical sensor readout IC with a bi-directional potentiostat for accommodating a large dynamic sensing current range. The proposed chopper stabilization potentiostat, suppressing low-frequency noise at the front end and providing stable positive and negative potentials between the working and reference electrodes for bi-directional current sensing through a switched push-pull readout stage. The digital implementation of an oscillator-based current to frequency converter and frequency counter transforms the sensing current directly into digital codes. The design is realized in a 0.18μm CMOS process and occupies an area of 1.3mm2, including all passive components and pads. The proposed readout IC achieves a 0.9pA minimum detectable current in a current range of ± 18μA, an R2 linearity of 0.999, and a dynamic detectable current range of 152dB. The static power consumption of the proposed readout IC is 2.9μW from a 1.5V supply.",
keywords = "chopper stabilization, large dynamic range, low-power design, potentiostat",
author = "Tsai, {Jui Hsiang} and Chen, {Yi Chia} and Yu-Te Liao",
note = "Publisher Copyright: {\textcopyright} 2018 IEEE.; 2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 ; Conference date: 27-05-2018 Through 30-05-2018",
year = "2018",
month = apr,
day = "26",
doi = "10.1109/ISCAS.2018.8351107",
language = "English",
series = "Proceedings - IEEE International Symposium on Circuits and Systems",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings",
address = "美國",
}