R
EM6124
LCD Voltage Bias Levels
LCD Drive
Type
LCD Bias
VOP
VON(rms)
VOFF(rms)
VOFF(rms)
Configuration
EM6124 (24)
n=24
1:24 MUX
n + 1
n
2
(
n +12
)
6 Levels
6 Levels
= 1.230
= 4.68
= 4.39
= 4.08
n −1
(
n −1
)
n
2
(
n +12
)
EM6124 (20)
n=20
1:20 MUX
n + 1
n −1
= 1.255
= 1.291
= 1.446
(
n −1
)
n
2
(
n +12
)
EM6124 (16)
n=16
1:16 MUX
1/5 Bias
6 Levels
n + 1
n −1
(
n −1
)
4
EM6124 (8)
n=8
1:8 MUX
= 3.4
n −15
n + 3
1/4 Bias
6 Levels
3
1+
n
Table 13
Optimum LCD Bias Voltages
Multiplex
VLCD
V1
V2
V3
V4
VSS
Rate
1:24
1:20
1:16
1:8
1
1
1
1
0.930
0.817
0.800
0.750
0.660
0.634
0.600
0.500
0.340
0.366
0.400
0.250
0.170
0.183
0.200
-
0
0
0
0'
VLCD > V1 > V2 > V3 > V4 > VSS
The values in the above table are given in reference to VLCD eg. 0.5 means 0.5 x VLCD
Table 14
10
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