注意：无电路图，远古项目 DAC：TI PCM5242 模拟供电：TI TPS7A4901 数字供电：TI TPS7A8001 耳放：TI INA1620 耳放供电：TI TPS65131（3.0-4.2V转±10.5V）TPS7A4700/TPS7A3301（±9V LDO） 蓝牙模块：天嘉润 BTM-875B（CSR8675）
AltiumDesigner封装库
基于AK5371AVQ的USB立体声麦克风
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