11.1 Layout Guidelines

• Use at least 4 PCB layers (top to bottom); LVDS signals, ground, power, and TTL signals.
• Isolate TTL signals from LVDS signals, otherwise the TTL may couple onto the LVDS lines. Best practice is to place TTL and LVDS signals on different layers which are isolated by power or ground plane(s).
• Keep drivers and receivers as close to the (LVDS port side) connectors as possible.

11.2 Layout Example

Figure 22. Simplified DS90LV027A and DS90LV028A Layout