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DS90UH947-Q1: is 100 ohm termination resistor needed at LVDS input pin

PYTsai
Genius 10405 points
Part Number: DS90UH947-Q1

Hi 

May i check is 100 ohm termination resistor needed at LVDS input pin if our PCB already do 100 ohm differential impedance layout. 

  • 0
    TI__Guru** 103215 points

    Hello PYTsai,

    Yes, these termination resistors are required. 100ohm differential routing is referring to the characteristic impedance of the traces as a transmission line. The termination resistors are setting DC voltage levels. 

    Best Regards,

    Casey