This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

SDI2进4出问题(LMH0344、LMH0346)

Other Parts Discussed in Thread: LMH0346

这是其中1路的SDI一分2电路,在我的PCB上,我用了两组这样的电路。实际调试中发现问题,当我两路都接上SDI相机的时候,在接收端SDI信号经常会出现NoSignal现象。测试发现如果只接一路SDI信号时,在另外的一路上也能测到串过去的SDI信号。查数据手册发现LMH0346差分输出有上拉电阻到VCC。而我两组SDI信号用的是同一个VCC。而且两路的SDI地是连在一起的。是不是因为这样导致SDI信号的串扰?