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想找一个AGC的芯片 完全硬件AGC 不需要软件控制的 价格20元以下
完全硬件AGC，可以使用VCA，压控增益放大器搭一个。
你好 有具体 芯片或者电路图？ 输出可以由电位器调节幅度的 做到AGC
