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TFP 410 Line Impedance



Hello,

I am using the TFP 410 in my school project. Due to my low budget I cannot purchase a controlled impedance PCB. In the data sheet it mentions the DVI differential pairs need to be 50 ohms. I was wondering how I could successfully achieve this without the use of a controlled Z PCB. I will be using a 4 layer PCB with Signal-GND-PWR-Signal. I was also curious if there is a impedance specification for the RGB lines, there is nothing mentioned in the data sheet. 

Thanks,

Mike