A CMOS Switched Capacitor Based Low Power Amperometric Readout Circuit for Microneedle Glucose Sensor

被引：1

作者：

Lim, Cheolhwan ^{[1
]}

Govardhan, Sunil ^{[1
]}

Kim, Hyoungsoo ^{[2
]}

Jung, Sungyong ^{[1
]}

Ryoo, Kwangki ^{[3
]}

机构：

[1] Univ Texas Arlington, Dept Elect Engn, Arlington, TX 76019 USA

[2] Univ North Texas, Dept Elect Engn, Denton, TX 76203 USA

[3] Hanbat Natl Univ, Dept Informat & Commun Engn, Daejeon 305719, South Korea

来源：

JOURNAL OF LOW POWER ELECTRONICS | 2014年 / 10卷 / 02期

关键词：

Switched Capacitor; Trans-Impedance Amplifier; Low Power; Readout Circuit; Glucose Sensor; Amperometric Sensor;

D O I：

10.1166/jolpe.2014.1317

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this work, a switched capacitor based Trans-Impedance Amplifier (TIA) for a glucose sensor readout circuit is designed and tested. The proposed circuit has several advantages when compared to a conventional TIA using a feedback resistor such as lower power consumption, smaller layout area and better noise characteristics. The total layout area of the circuit is 160 mu m x 157 mu m when using 0.35 mu m CMOS fabrication technology. The total power consumption of the proposed circuit is 1.335 mW at a clock frequency of 200 Hz, which is 84% lower than that of a single-ended potentiostat. Also, it achieves 1.3 mV(rms) noise, which is 48% lower than that of a fully differential potentiostat design.

引用

页码：279 / 285

页数：7

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