AN1702FHK Datasheet, PDF (1/6 Pages) Panasonic Semiconductor – Gray-scale voltage generating IC for liquid crystal display

Gradation Voltage Generating IC for Color TFT-LCD
AN1702FHK
Gray-scale voltage generating IC for liquid crystal display
I Overview
The AN1702FHK has been designed for LCD
applications,and features built-in functions such as a
gray-scale voltage generatior that supports 256 grada-
tions, a reference voltage of 1.23 V, 16 output buffer amp
circuits and a COM amplifier circuit.
I Features
• Built-in 1.23 V (typical) high-precision reference voltage
power source
• Wide buffer amp. dynamic range output: V_CC − 0.2 V
(top stage) to GND + 0.15 V (bottom stage)
• Large ±100 mA (max.) COM amp. driving current
I Applications
• Gray-scale power sources for LCDs
I Block Diagram
36
37
9.00±0.20
7.00±0.10
25
Unit: mm
24
48
1
(0.75)
13
0.50
12
0.20±0.05
0.10 M
(1.00)
0.10
Seating plane
0° to 8°
0.50±0.10
TQFP048-P-0707B (Lead-free package)
VB3 VB4 VB5 VB6 VB7 N.C. GND2 VA7 VA6 VA5 VA4 VA3
VB2
37
VB1
38
VB0
39
GND1
40
N.C.
41
COM1
42
36
35
34
33
32
31
30
29
28
27
L4
L5
L6
L7
R2
R1
R0
COM0
43
COM
L2
COMS
44
L0
VL0
45
N.C.
46
L1
L3
R7
R6
R5
R4
VL1
47
VL2
48
1
2
3
4
5
6
7
8
9
10
26
25
24
23
22
21
REF
20
19
VREF
18
17
16
15
R3
14
13
11
12
VA2
VA1
VA0
N.C.
VREF
VR
N.C.
VCC1
N.C.
VR0
VR1
VR2
VL3 VL4 VL5 VL6 VL7 N.C. VCC2 VR7 VR6 VR5 VR4 VR3
Publication date: December 2001
SDF00004BEB
1