SHANDONG SCIENCE ›› 2014, Vol. 27 ›› Issue (6): 54-58.doi: 10.3976/j.issn.1002-4026.2014.06.009

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AD7741 based isolation A/D conversion for multielectrochemical biosensor signals

ZHU Si-rong,ZHOU Wan-li,ZHANG Li-qun,YANG Yan,ZHAO Xiao-hua   

  1. 1. Shandong Provincial Key Laboratory for Biosensors, Institute of Biology, Shandong Academy of Sciences, Jinan 250014, China; 2. Biotechnology Center, Shandong Academy of Sciences, Jinan 250014, China
  • Received:2014-07-14 Published:2014-12-20 Online:2014-12-20

Abstract: We detailedly present a preamplifier circuit of an electrochemical biosensor,and an A/D conversion scheme of AD7741 based signal isolation.We eventually provide the program control flow for time sharing isolation A/D conversion of multichannel signals and correction method for A/D conversion data.

Key words: signal isolation, A/D conversion, AD7741

CLC Number: 

  • TP274.2

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