Other Parts Discussed in Thread: HD3SS3212
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您好,加耦合电容的目的是重新建立新的共模电压,datasheet中也有描述AC耦合电容多种放置方法。 上图8中,HD3SS3212 放在host和USB-C之间,前端没有加耦合电容,则
HD3SS3212的偏置电压来自于host,后端USB -C的TX端由于加了耦合电容,偏置电压来自于内部偏置电路,如果内部没有集成偏置电路的话,则需要外部搭建分压电路重新建立新的共模电压。