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请问表面印有02140A 17k CJFJ和02209 07k E03D的是贵公司的哪款芯片？在网上查不到。
你好！
这是ti查询part marking的页面，没有查到对应型号的产品
focus.ti.com/.../partmarkinghome.jsp
郁闷呀,怎么查不到呢,片子上印有ＴＩ的标记的,８脚贴片封装
如果确认是TI的芯片，应该是OPA2140A和OPA2209A，但根据如下链接查询二者top side marking分别为2140和2209. focus.ti.com/.../partmarkinghome.jsp
非常感谢您的回答，我大概是没分清楚O和0
我再看看这两个芯片的资料确认一下
