Data_acquisition_front_end

Published:2009/7/23 22:08:00 Author:Jessie | From:SeekIC

Figure 2-1 shows a typical data0acquisition system using a MAX358 multiplexer．Because the mux is driving a high-impedance input , the error is a function of IC resistance r DS(ON) times the mux leakage current I DS(ON) and the amplifier bias current IBIAS、or：VBRROR＝r DS(ON) ×I D(ON) ＋IBIAS(MAX420) ＝1.5kΩ×(2nA＋30 pA) ＝3.05-μV maximum error



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