標題: A Wirelessly Powered CMOS Electrochemical Sensing Interface With Power-Aware RF-DC Power Management
作者: Tsai, Jui-Hsiang
Kuo, Chen-Yi
Lin, Shu-Hsuan
Lin, Fu-To
Liao, Yu-Te
電機工程學系
Department of Electrical and Computer Engineering
關鍵字: CMOS;chopper-stabilization;electrochemical sensor;wirelessly-powered
公開日期: 1-Sep-2018
摘要: A wirelessly powered electrochemical sensing chip with high-efficiency adaptive power management for a wide RF-powering range and a low-noise chopper-stabilization potentiostat for high-resolution electrochemical current detection is presented. The chip is fabricated using a 0.18-mu m CMOS process. A novel, power-aware, multiple-path, RF-energy harvesting front end extends the high-efficiency (> 20%) RF-powering range to 8.5 dB. In the sensor-readout interface, a chopper-stabilization potentiostat with an oscillator-based current readout achieves a 3.3-pA current resolution in the current range of 800nA and an R-2 linearity of 0.9987 while consuming only 4.4 mu W. The power efficiency of the electrochemical readout interface is 0.18, and the dynamic detection range is 107 dB.
URI: http://dx.doi.org/10.1109/TCSI.2018.2797238
http://hdl.handle.net/11536/147963
ISSN: 1549-8328
DOI: 10.1109/TCSI.2018.2797238
期刊: IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
Volume: 65
起始頁: 2810
結束頁: 2820
Appears in Collections:Articles