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123
哦，对了，第一个可能是个AD转换器，我只是说可能，不太确定
Hi
能确认一定是TI的芯片吗？
TI的芯片topside marking 网站查询：http://www.ti.com/general/docs/partmarking/partmarkinglookup.tsp?startPosition=0&navigationId=0&templateId=0&siteFlag=0&keyword=93A9&searchType=device
并未搜索到你提到的marking。
