4.3 μW 10 fA-sensitivity dual-mode current converter for implantable glucose monitoring

Author

Xi Tan ; Xianliang Chen ; Yiwu Zhang ; Junyu Wang ; Hao Min ; Yue Huang ; Mason, Andrew J.

Author_Institution

State Key Lab. of ASIC & Syst., Fudan Univ., Shanghai, China

Volume

51

Issue

19

fYear

2015

Firstpage

1484

Lastpage

1486

Abstract

A low-power, high-sensitive current converter for implantable electrochemical glucose sensor tags based on radio frequency identification is presented. The current converter can work in the incremental sigma delta (ΣΔ) converter mode or the dual-slope converter mode. The two modes can be switched automatically according to the input current value for the target measuring range from 10 fA to 1 nA. The dual-mode converter offers a 10 fA-input current sensitivity, 100 dB dynamic range and consumes 4.26 μW of power from a 1.5 V supply.

Keywords

biomedical electronics; biomedical equipment; electrochemical sensors; low-power electronics; patient monitoring; radiofrequency identification; sigma-delta modulation; sugar; current 10 fA to 1 nA; dual-slope converter mode; implantable electrochemical glucose sensor; incremental sigma delta converter mode; input current sensitivity; low-power high-sensitive dual-mode current converter; power 4.26 muW; power 4.3 muW; radiofrequency identification; voltage 1.5 V;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2015.2238

Filename

7272261