9.2.2.4 Driver Output Voltage

DS90LV027AH driver output has a 1.2-V common-mode voltage, with a nominal differential output signal of 360 mV. This 360 mV is the absolute value of the differential swing (VOD = |V+– V–|). The peak-to-peak differential voltage is either twice this value or 700 mV. 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, the user could expect a minimum of approximately 150 mV of noise margin (247-mV minimum output voltage – 100-mV maximum input requirement). If the DS90LV027AH operates under a supply range of 3.0 V to 3.6 V, the minimum noise margin will drop to 150 mV.