SNLS198B September 2005 – January 2019 DS90LV011AH
DS90LV011AH driver output has 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 (VOD = |V+– V–|). The peak-to-peak differential voltage is 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, we would expect a minimum of ~150 mV of noise margin (247-mV minimum output voltage – 100-mV maximum input requirement). If we operate the DS90LV011AH with a supply in the range of 3.0 V to 3.6 V, the minimum noise margin will drop to 150 mV.