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如图所示：丝印是307 552 ，怎么查询器件型号?
看外围电路, 倒是有点象运放的.
画出电路图看看
这个芯片确定是TI的吗？根据丝印查不到对应的型号，下面这个链接是根据丝印查对应型号的链接：http://www.ti.com/packaging/docs/partlookup.tsp
