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板子上3TI运放 封装为SOIC8 丝印在TI官网丝印查询中找不到对应型号！！！
丝印分别为SN8006、SN5552、SN1272
以上3个TI的运放查不到型号！！！
封装均为SOIC8 丝印分别为SN5552、SN1272、SN8006
