Title
A Dual-Channel Wide Input Range Interface Circuit For Electrochemical Amperometric Sensors
Abstract
A wide input range, compliant with electrochemical amperometric sensors interface circuit is proposed in this paper. The interface circuit consists of a potentiostat which is fabricated on PCB board and an interface ASIC which is realized in a single chip. The ASIC employs current integrator (CI) and transimpedance amplifier (TIA) to deal with the input current in the order of nA and mu A separately, achieving the advantage of wide input range and high resolution. An incremental sigma-delta ADC is employed to digitize the transferring signal to achieve the feature of one-to-one mapping between input and output. The ASIC is fabricated in 0.18 mu m 1P5M mixed-signal CMOS process, has a dynamic range of 120 dB, and consumes 4.2 mA.
Year
DOI
Venue
2015
10.1587/elex.12.20150568
IEICE ELECTRONICS EXPRESS
Keywords
Field
DocType
wide range, electrochemical sensor, interface circuit, TIA
Computer science,Amperometry,Communication channel,Electronic engineering,Electrochemical gas sensor,Electrochemistry
Journal
Volume
Issue
ISSN
12
17
1349-2543
Citations 
PageRank 
References 
0
0.34
6
Authors
4
Name
Order
Citations
PageRank
Yun-Tao Liu1297.42
Min Chen230.81
Zhichao Li3407.53
Mingyuan Ren400.34