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就是在同一电路下仅增大运放两端的电源,所得到的波特图中带宽为什么会有明显变化从5V升到7.5V时带宽增加了近100M。
这就是运放的电源调制效应。
说详细点
由于电源电压变化,IC内的偏置能静态工作点也会因此而变。这就是电源调制效应。