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AMC1302: AMC1302失调电压过大,怎么回事。

Part Number: AMC1302

使用AMC1302时,AMC1302的失调电压达到2.8mV,影响了其后端的信号处理电路,观看手册Vos典型值仅为2.5uV,如果乘以增益41,也就0.1mV,实测6个PCB板的输出失调电压都为2.8V,就算失调电压都达到手册所写的50uV,但是也不可能6个板子都处于最坏的情况吧。很困惑。原来也使用过AMC1302但也是没有达到这么大的失调电压。