采用PIN管前端的TIA放大，要求捕获单个光脉冲信号，信号脉宽10ns，电流从10uA到100mA范围。
如何测量。需要多级放大每一级都加ADC么？有没有其他方案？
如果有两路信号，两个PIN管同时接收单个光脉冲，信号大小相差小于5倍，信号脉宽10ns，电流从10uA到100mA范围。
有办法分辨两个信号的相对大小么？
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