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找不到芯片型号

Other Parts Discussed in Thread: OPA2377

手头有块板子上的芯片型号弄不清了 丝印是

TI28 OTAQ 和TI31 OTAQ  SO8 封装的 应该是TI 的芯片 请问TI 的工程师是什么型号的芯片 ,是激光测距雪崩管后面用的