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LMH32404RHFEVM: 无法输入光电二极管的电流

Part Number: LMH32404RHFEVM

LMH32404RHFEVM的说明上显示板子背后有供光电二极管(PD)电流输入的地方,但是实物是没有的,之前工程师回复的意见是直接接VBIAS和in端,但是板子位唯一的输入就是4个IN,不知道该串接在哪里。