Si570 LVDS Output Impedance

Alfredo Mendiola Loyola
 

Hello,

If I connect a Center Tap of an 1:4 Transformer (Secondary) to the LVDS outputs I will get a 50 Ohm output impedance on the Primary?

Schematic:
https://docs.google.com/viewer?a=v&pid=sites&srcid=ZGVmYXVsdGRvbWFpbnxhZTVwaHJhZGlvbm90ZWJvb2t8Z3g6NjA1OGNmZjAxNjQ5ZDhmNQ

I understand that the output impedance of each output of the si570 is 100 Ohm (LVDS), When I connect each output of the si570 to the transformer Secondary I will get 200 ohm and 50 ohm on the Primary (200 4 = 50 ohm).

Do I have to connect the center tap of the secondary to ground?

Transformer Datasheet:
https://www.coilcraft.com/pdfs/pwb.pdf
Model: PWB-4-BL

73
Alfredo Mendiola
OA4AJP

Join PHSNA@groups.io to automatically receive all group messages.