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求推荐一款 12位 8通道或4通道，转换速率100KHZ，异步采样的ADC芯片，输入信号为变电站传感器变送器信号，单极性，要求常用，串行接口，有内置参考，不要太贵哦
ADS8634，ADS8638,分别为4通道和8通道。您看下datasheet，以及价格封装等是否满足您的要求。
