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可编程增益跨阻放大器使光谱系统的动态范围达到较大
最终运算放大器的带宽会起作用,使增益开始滚降。 图8显示了放大器的噪声增益与频率的关系,以及传递函数中各极点和零点的位置。 图8. 放大器噪声增益传递函数 正如电阻噪声密度 ...
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