目前有个项目,需要采集线圈的交变磁场的磁感电压,频率20K~30K,感应电压大小10uV~100uV。前级放大用什么方案合适,信号的滤波有没有必要做?
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目前有个项目,需要采集线圈的交变磁场的磁感电压,频率20K~30K,感应电压大小10uV~100uV。前级放大用什么方案合适,信号的滤波有没有必要做?