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lmv1012 引脚怎么区分,DSBGA封装怎么区分引脚

Other Parts Discussed in Thread: LMV1012

TI的各位专家,您们好!

        我申请了lmv1012(DSBGA封装)的样片,但是按照datasheet我无法区分其引脚,因为我拿到的芯片正面没有任何凸点或凹点,没有任何标识,光溜溜的一片,而背面则是四个极小的金属点引脚而已,请问我该如何区分?

       谢谢!