adc12eu050eb National Semiconductor Corporation, adc12eu050eb Datasheet - Page 27

• Manufacturer Part Number: adc12eu050eb
• Description: Adc12eu050 Ultra-low Power, Octal, 12-bit, 40-50 Msps Sigma-delta Analog-to-digital Converter
• Manufacturer: National Semiconductor Corporation

Output Modes And Output Common Mode
Three different output modes are also supported: SLVS,
LVDS and reduced common mode LVDS. SLVS and LVDS
modes output data according to their respective specifica-
tions.
Reduced common mode LVDS must be used when the output
driver voltage, VDR, is 1.2V. The standard LVDS common
mode voltage is 1.2V, which is obviously not feasible if VDR
is 1.2V. Therefore, the output common mode voltage must be
set to 1.0V by setting the bit OCM in the LVDS Control Reg-
ister to 0.
When VDR is 1.8V, the standard LVDS common mode volt-
age of 1.2V must be used, by setting OCM equal to 1.
FIGURE 16. Output Driver Circuit: Reduced Common
Mode LVDS
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SLVS mode offers the lowest power consumption, followed
by reduced common mode LVDS then standard LVDS.
FIGURE 17. Output Driver Circuit: LVDS
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