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-and-
hold circuit
•
Effective frequency response (horizontal resolution
of 600 TV lines achieved in combination with the
LCX007AL)
•
Built-in
γ
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
V
CC
•
Operating temperature Topr
•
Storage temperature
Tstg
•
Allowable power dissipation
P
D
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
V
CC
1
V
CC
2
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.
–1–
E94634A77
CXA1819Q
Pin Description
Pin
No.
Symbol
Pin voltage
Equivalent circuit
Description
V
CC
1
1.5k
2
GAMMA
0 to 5V
∗
2
129
50µA
GND1
Gamma control.
Gamma variable range:
3.7 to 15dB
Preset mode (pin 0V)
≈
0dB
3
B GAIN
1.6 to 5V
∗
V
CC
1
1.5k
3
4
129
50µA
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
V
CC
1
400
5
RGB
GAIN
1.6 to 5V
∗
5
129
150µA
GND1
RGB signal common gain
control.
Gain variable range: 5.5 to 11dB
V
CC
1
1.5k
6
SID
GAIN
1.6 to 5V
∗
6
129
50µA
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
V
CC
2
7
SIG
CENT
1.6 to 5V
∗
7
129
100µA
GND1
RGB signal center voltage
control.
Center voltage variable range:
6.2 to 7.6V
V
CC
2
8
B CLP
6.2 to 7.6V
∗
8
129
B output detection signal input.
5µA
GND1
V
CC
2
9
B OUT
8V
Typ.
9
B signal output.
The output is fed back to
provide sufficiently low
impedance (less than few
Ω).
GND2
V
CC
2
10
G CLP
6.2 to 7.6V
∗
10
129
5µA
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
V
CC
2
11
G OUT
8V
Typ.
11
G signal output.
The output is fed back to
provide sufficiently low
impedance (less than few
Ω).
GND2
V
CC
2
14
R CLP
6.2 to 7.6V
∗
14
129
R output detection signal input.
GND1
5µA
V
CC
2
15
R OUT
8V
Typ.
15
R signal output.
The output is fed back to
provide sufficiently low
impedance (less than few
Ω).
GND2
16
17
18
19
GND2
GND
GND.
Vcc2
13V
13V power supply.
V
CC
2
20
SID OUT
8V
Typ.
20
SID signal output.
The output is fed back to
provide sufficiently low
impedance (less than few
Ω).
GND2
Note)
∗
in the Pin voltage indicates external applied voltage.
–5–
DIY/Open Source Hardware
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