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求教vca821

Other Parts Discussed in Thread: VCA821, VCA810

采用两片vca821级联时,一旦接入第二片,第一片的输出信号就会变糟糕,不知道是不是阻抗匹配的问题。

还有关于vca821在正负5V供电时,所能达到的最大输出峰峰值为多少?