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放大器带宽运算

你好,我需要对这样一个信号进行放大:信号存在一个大周期T,最大工作频率33kHz,一般工作频率为1kHz~22kHz,在大周期T内会出现脉冲宽度:5ns-40ns,脉冲上升时间:小于5ns的脉冲波形信号(有用信号)。持续时间15us。我该选择多大的带宽的放大器进行信号的放大。