2-wire LVDS

Transmission of video signals via 2-wire LVDS technology with CIC and CID.

Fig 1: 2-Wire LVDS Technology With CIC And CID

Courtesy of BMW OF NORTH AMERICA, INC.

Signal transmission through this 2-wire LVDS line offers four distinct advantages:

• Higher data transfer rate
• Simplified wiring
• Runtime differences between the individual lines are avoided
• Serial 2-wire LVDS data transmission is now much more cost-effective than 8-wire LVDS technology

The main advantage of using serial 2-wire LVDS is the resulting high picture resolution.

A 4-core, shielded cable is used for the 2-wire LVDS technology. The cable consists of the four cores, LVDS+, LVDS-, 2x ground and shielding.

For Electromagnetic compatibility (EMC) reasons, the unused wire is also connected to ground.

In the illustration to the right, the advantages of both cores connected to ground are shown with the aid of field lines.

The capacitive interference of the signals is deflected to ground. The wires connected to ground form a defined potential and cannot act as antennas.

This ensures that additional interference is avoided.

Fig 2: EMC Protection Using 2-Wire LVDS Technology

Courtesy of BMW OF NORTH AMERICA, INC.