9.4.4 Driver Output Voltage

The DSLVDS1001 driver output is a 1.2-V common-mode voltage, with a nominal differential output signal of 350 mV. This 350 mV is the absolute value of the differential swing (V_OD = |V⁺– V^–|). The peak-to-peak differential voltage is twice this value, or 700 mV.

In this example, the LVDS receiver thresholds are ±100 mV. With these receiver decision thresholds, it is clear that the disadvantage of operating the driver with a lower supply will be noise margin. With fully-compliant LVDS drivers and receivers, TI expects a minimum noise margin of approximately 150 mV (247-mV minimum output voltage – 100-mV maximum input requirement). If the DSLVDS1001 operates within the 3 V to 3.6 V supply range, the minimum noise margin will drop to 150 mV.