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请推荐一下音频的差分信号转单端信号的芯片，分装尽量小一点。
INA163，INA217，PGA2500可以评估一下。更具体的内容可以去TI官网的应用->专业音频混合器那里找，网址是
www.ti.com.cn/.../pro_audio_mixer
便宜的可以选择DRV632，EVM的电路可用
