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tlv320aic1106 音频芯片 MICGAIN+ 为何与 MICIN- 接,MICGAIN+ 不是为正增益么

Other Parts Discussed in Thread: TLV320AIC1106

想问一下,这个tlv320aic1106看参考资料上,是MICGAIN+ 与MICIN- 接,MICGAIN-与MICIN+接,这个MIACGAIN+ 为正增益,MIACGAIN-为负增益。在我理解应是 MICGAIN+ 与MICIN+相接才对呀?不明白。