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Part: CXA1819
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CXA1819Q
RGB Driver for LCD
Description The CXA1819Q is an RGB driver designed for LCD panel LCX007. It supports a line alternative RGB drive system. In addition, three-panel projectors can be supported by using three CXA1819Q ICs. Features · Built-in RGB signal phase matching sample-andhold circuit · Effective frequency response (horizontal resolution of 600 TV lines achieved in combination with the LCX007AL) · Built-in control circuit · Built-in side black generation circuit for 4:3/16:9 aspect conversion · Built-in VCOM voltage output circuit Absolute Maximum Ratings · Supply voltage VCC · Operating temperature Topr · Storage temperature Tstg · Allowable power dissipation PD Operating Condition Supply voltage 48 pin QFP (Plastic)
Structure Bipolar silicon monolithic IC Applications Liquid crystal projectors Liquid crystal viewfinders Compact liquid crystal monitors
14 20 to +75 65 to +150 600
V °C °C mW
VCC1 VCC2
5 12.2 to 13.3
V V
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
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E94634A77
CXA1819Q
Block Diagram
RGBBRT
RBRT
BBRT
SIDBRT
PRG
26
SH1
SH2
36
35
BF
34
33
32
SH3
NC
31
SH4
30
29
28
27
25
NC 37 NC 38 RIN 39 GIN 40 BIN 41 BRT 42 VCC1 43 VCC1 44 GND1 45 GND1 46 M ODE 47 NC 48 GAIN CONT CLP S/H S/H BRT CLP S/H S/H BRT CLP S/H S/H BRT
SUB BRT CONT AM P BUFF
FR P
24 NC 23 VCOM CONT
22 VCOM OUT 21 SIDCLP GAM M A AM P BUFF 20 SIDOUT 19 VCC2
GAM M A
AM P
BUFF
18 VCC2 17 16 GND2 GND2 ROUT RCLP NC
GAM M A
AM P
BUFF
15 14 13
1
2
3
4
5
6
7
8
9
10
11
12
BOUT
GCLP
SIDGAIN
BGAIN
GAM M A
RGAIN
SIG.C
BCLP
NC
RGBGAIN
2
GOUT
NC
CXA1819Q
Pin Description Pin No. Symbol Pin voltage Equivalent circuit Description
VCC1
1.5k
2
GAMMA
0 to 5V
2 129 50µ A GND1
Gamma control. Gamma variable range: 3.7 to 15dB Preset mode (pin 0V) 0dB
3
B GAIN
1.6 to 5V
VCC1
1.5k 3 4 129 50µ A GND1
B signal gain control. Gain variable range: 2.0 to +2.0dB
4
R GAIN
1.6 to 5V
R signal gain control. Gain variable range: 2.0 to +2.0dB
VCC1
400
5
RGB GAIN
1.6 to 5V
5 129 150µ A GND1
RGB signal common gain control. Gain variable range: 5.5 to 11dB
VCC1
1.5k
6
SID GAIN
1.6 to 5V
6 129 50µ A GND1
SID signal gray level control.
Note) in the Pin voltage indicates external applied voltage.
3
CXA1819Q
Pin No.
Symbol
Pin voltage
Equivalent circuit
Description
VCC2
7
SIG CENT
1.6 to 5V
7 129 100µ A GND1
RGB signal center voltage control. Center voltage variable range: 6.2 to 7.6V
VCC2
8
B CLP
6.2 to 7.6V
8 129
B output detection signal input.
5µ A GND1
VCC2
9
B OUT
8V Typ.
9
B signal output. The output is fed back to provide sufficiently low impedance (less than few ).
GND2
VCC2
10
G CLP
6.2 to 7.6V
10 129 5µ A
G output detection signal input.
GND1
Note) in the Pin voltage indicates external applied voltage.
4
CXA1819Q
Pin No.
Symbol
Pin voltage
Equivalent circuit
Description
VCC2
11
G OUT
8V Typ.
11
G signal output. The output is fed back to provide sufficiently low impedance (less than few ).
GND2
VCC2
14
R CLP
6.2 to 7.6V
14 129
R output detection signal input.
GND1
5µ A
VCC2
15
R OUT
8V Typ.
15
R signal output. The output is fed back to provide sufficiently low impedance (less than few ).
GND2
16 17 18 19
GND2
GND
GND.
Vcc2
13V
13V power supply.
VCC2
20
SID OUT
8V Typ.
20
SID signal output. The output is fed back to provide sufficiently low impedance (less than few ).
GND2
Note) in the Pin voltage indicates external applied voltage.
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