这个G=-4是怎么算的?
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那是不是输入端电阻Rin是50先与100并,然后再与RG串
输出电阻是Rout=RF
则增益是G=-Rout/Rin=-RF/(50||100 + RG),这里||为并联的意思
我就是看了那个图才觉得这个图的增益错了
在FIGURE 13下面,说如果匹配信号源阻抗的话,增益是-3.98
那在实际中是按照-RF/RG算哪?还是按照我上面的公式算哪?