The commonest type of power supply noise is swishing noise 精密混合信号电路中最好别用开关电源。
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Using an lc circuit as a power supply filter can actually multiply the power supply noise at the filter " s resonant frequency . use inductor with low q to overcome this 使用lc电路作为电源滤波器能精确地在滤波器的谐振频率点处乘以电源噪声，使用低q电感来应对。
