Title
A Current-Mode Sigma Delta Ad Based Integrated Potentiostat
Abstract
An integrated potentiostat designed for amperometric electrochemical sensors is presented in this paper. The analog input current is digitized using an A/D converter which employs a current-mode, first-order single-bit sigma-delta (Sigma Delta) A/D architecture. Compared with traditional potentiostat, the new potentiostat topology consumes very low power, occupies a very small die area, and has potentially very low noise. These characteristics make the new topology very suitable for portable applications. The potentiostat circuit is implemented in a 0.18 um CMOS process. The circuit converts the sensor current to digital code and the results indicated that the potentiostat can measure the current as low as several nA, and the digital output has a good linearity.
Year
DOI
Venue
2018
10.1587/elex.15.20180876
IEICE ELECTRONICS EXPRESS
Keywords
Field
DocType
current-mode, Sigma Delta AD, potentiostat, electrochemical sensor
Computer science,Electrochemical gas sensor,Electronic engineering,Current mode,Potentiostat
Journal
Volume
Issue
ISSN
15
23
1349-2543
Citations 
PageRank 
References 
0
0.34
4
Authors
3
Name
Order
Citations
PageRank
Yun-Tao Liu1297.42
Xin Sui234031.49
Mingyuan Ren300.68