电子线路基础乘法器的输出为：uO1(t)?KMui(t)uC(t)=KMUim(1?Mcos?t)cos?Ct?UCmcos?Ct=111?11?KMUimUCm??cos2?Ct?Mcos?t?cos(2?C??)t?cos(2?-?)t?244?22?输出为：1uO(t)?MKMUimUCmcos?t211uO2(t)?KMUimUCm(?Mcos?t)22hongfeng@nuaa.edu.cn实现了解调（即检波）功能。2015/12/1645电子线路基础4.1.5 非理想集成运放运算电路的误差分析FUIO-+1IIBIIBUidRid1'46
22015/12/16
--u+++-ui'1IIO2RoAuc1(uu)hongfeng@nuaa.edu.cn
--uiu1IIO2Aud(u--u)+uo'电子线路基础iFF11'2015/12/1647
-uAud(u-.ui'++-uii1uRidu)uo'hongfeng@nuaa.edu.cn
电子线路基础Aud和Rid的影响1. 输出电压是：u?得方程组:o?Aud??u??u????ui???i1?iF??R1?Aud??u??u???ui?i1?R1?u???i1?iF??Rid??iF?RF?uo解之，可得：?ui?ui?RF???uo???????RF??R1?R?Rid??R1?R1?1?AudRidR?hongfeng@nuaa.edu.cn2015/12/1648?u??u?????uo?u????u?