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OPA365: 0.1Hz-10Hz噪声峰峰值

Part Number: OPA365

在许多运算放大器的规格书中,比如OPA365,关于输入电压噪声指标的条件,定义为f=0.1Hz-10Hz下的噪声峰峰值。我想知道这个0.1Hz-10Hz的范围是如何确定的,如果想表征的是低频噪声,那为何要限制0.1Hz的截止频率呢。