Serial Digital Interface(SDI) : The reason for adding a pull-up resistor and the design reason and role of the rest of RLC.

Thread Starter


Joined Nov 14, 2022
Hello, I am studying an IC called LMH0340.
I'm having trouble understanding this part.

1. What is the reason for adding R1 and R2 (Pull-up)?
2. What are the roles of R3, L1, C1, C2, and R4 in the video differential signal, and why are R3 and L1 in parallel?
3. Why does the positive signal go out to SDI Out and the negative go to ground?

I hope someone who knows SDI well can help. Thank you very much.