Advantech IDK-2121W, User Manual

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13 IDK-2121W User Manual
Chapter 2
E
lectrical
Characteristics
2.1.1 Signal Electrical Characteristics
Input signals shall be low or Hi-Z state when VDD is off.
Note
LVDS Signal Waveform.
2.2 Backlight Driving Conditions
Parameter guideline for LED Light Bar Driver is under stable conditions at 25°C
(Room Temperature):
Note1
The "LED life time" is defined as the module brightness decreased to 50%
original brightness and the ambient temperature is 25°C and typical LED Current at
950 mA.
Note2
The LED driving condition is defined for each LED module.(10 LED Serial).
Note3
The variance of LED Light Bar power consumption is 10%. Calculator value
for reference (IL x VL x 2 = PLED)
Table 2.2: Signal electrical characteristics
Symbol Parameter Min. Typ. Max. Unit Condition
V
TH
Differential Input High Threshold - - +100 [mV] VCM = 1.2V,
Note 1
V
TL
Differential Input Low Threshold -100 - - [mV] VCM = 1.2V
Note 1
| V
ID
| Input Differential Voltage 100 - 600 [mV] Note 1
V
CM
Differential Input Common Mode
Voltage +1.0 +1.2 +1.5 [V] VTH-VTL =
200MV (max)
Note 1
Table 2.3: Backlight driving conditions
Item Symbol Values Unit Condition
Min. Typ. Max.
LED Voltage VL - - 19 V Note 2
LED Current IL - - 1000*2 mA Note 2
LED life time - 50,000 - - Hr Note 1