Hi,
I am working on an application which requires the use of ~75Ohm coax (actually closer to 80Ohm) to transfer some differential signals (a fixed requirement - I'd prefer to go 100Ohm differential, but not possible here).
The LVDS signalling standard is being used with the input signal coming from an LVDS driver through a 100Ohm twisted pair. I then need a repeater to drive this signal onto a pair of coax cables which will have the shields grounded and will be terminated differentially at the far end with a 150Ohm termination.
I'm trying to find a redriver to transfer the LVDS signals which are running at 400Mbps and must be DC coupled from the 100Ohm twisted pair at its input to the 150Ohm terminated pair of coaxes. There will also be two pairs in total which need to stay phase aligned to within +/-1.5ns of each other.
Will something like the DS25BR120 be suitable for these requirements. It seems all of the repeaters I have found are designed for 100Ohm, so I am wondering how much it will affect performance running over two 75Ohm coax cables differentially terminated at 150Ohm.
