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请问各位大神，-100DB的信号如何放大啊？选那种放大器比较合适，求救
你这信号的带宽是多少？需要放大到什么级别？后续你要对信号做什么处理？
还有-100db的讲法有点问题吧，直接告诉我们多少mV或uV
不好意思啊，我是处理射频过来的12.5K信号，最小大概有0.1mv，需要放大到4Vp-p给ADC采集。
我采用的是VCA810和PGA821级联，后面还有固定增益放大，请老师看看行不
