UPD160061A NEC, UPD160061A Datasheet - Page 6

• Manufacturer Part Number: UPD160061A
• Description: 384-OUTPUT TFT-LCD SOURCE DRIVER
• Manufacturer: NEC

5. RELATIONSHIP BETWEEN INPUT DATA AND OUTPUT VOLTAGE VALUE
gray scale voltages of differing polarity with respect to the LCD’s counter electrode voltage. The D/A converter consists of
ladder resistors and switches.
to V
to V
fine-gray scale voltage precision is not necessary, there is no need to connect a voltage follower circuit to the
compensated power supplies V
common electrode potential V
relationships of below.
input data and output voltage.
6
The
The ladder resistors (r0 to r62) are designed so that the ratio of LCD panel
Figure 5–1 shows the relationship between the driving voltages such as liquid-crystal driving voltages V
Figures 5–2 indicates
63
4
and V
” is almost equivalent, resistor ratio is shown in Figure 5−2. For the 2 sets of five
µ
PD160061A incorporates a 6-bit D/A converter whose odd output pins and even output pins output respectively
0.3 V
0.2 V
0.2 V
5
to V
0.5 V
9
, respectively, input gray scale voltages of the same polarity with respect to the common voltage. When
V
Figure 5–1. Relationship between Input Data and
V
V
V
V
V
DD2
V
V
V
DD2
V
V
SS2
V
1
2
3
4
5
6
8
0
7
9
γ
-corrected voltages and ladder resistors ratio. Figures 5–3 indicates the relationship between the
00
COM
1
to V
, and
0.5 V
3
V
and V
γ
DD2
DD2
-corrected voltages V
– 0.3 V ≥ V
– 0.2 V ≥ V
6
to V
10
Data Sheet S16041EJ2V0DS
8
.
5
0
> V
> V
Input data (HEX.)
6
1
> V
> V
0
20
2
7
to V
> V
> V
8
3
9
> V
> V
and the input data. Be sure to maintain the voltage
γ
9
4
- corrected Power Supplies
> V
≥ 0.5 V
γ
-compensated voltages to V
SS2
30
+ 0.2 V
DD2
γ
-compensated power supplies, V
3F
www.DataSheet4U.com
µ
Split interval
PD160061A
0
16
16
16
16
16
16
16
16
’ to V
DD2
63
and V
’ and V
SS2
0
γ
”
0
-
,