CXA1853AQ
RGB Driver for LCD
Description
The CXA1853AQ is an RGB driver for LCD panels.
It supports a line alternative RGB drive system.
Features
•
Built-in RGB signal phase matching sample-and-
hold circuit
•
Effective frequency response (18MHz Typ.)
•
Built-in gain and breakpoint variable 2-point
γ
compensation circuit
•
Built-in side black generation circuit for 4:3/16:9
aspect conversion
•
Built-in VCOM voltage output circuit
Structure
Bipolar silicon monolithic IC
Applications
•
Liquid crystal projectors
•
Liquid crystal viewfinders
•
Compact liquid crystal monitors
80 pin QFP (Plastic)
Absolute Maximum Ratings
(Ta = 25°C)
•
Supply voltage
•
Input pin voltage
V
CC
1
V
CC
2
V
IN
6
15
V
CC
1
–25 to +75
–55 to +150
1500
V
V
V
°C
°C
mW
•
Operating temperature Topr
•
Storage temperature Tstg
•
Allowable power dissipation
P
D
Operating Conditions
•
Supply voltage
V
CC
1
V
CC
2
•
RGB input signal voltage
V
IN
4.75 to 5.25
11.0 to 14.0
0.7
V
V
Vp-p
Note)
Note)
Defined as the amplitude from the pedestal
level to white.
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–
E96334-PS
CXA1853AQ
Block Diagram
GCA DETG
GCA DETR
GCA DETB
RGB GAIN
GAM SEL
42
SIG SEL
R GAIN
B GAIN
XCLP1
GND
IREF
N.C.
60
GND
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
XCLP2
SH4
V
CC
4
N.C.
SH2
SH3
41
SH1 61
PV
CC
62
SH IN 63
GND 64
B CLAMP 65
S/H
S/H
GCA
CLP
S/H
S/H
S/H
GCA
GAIN
CONT
WHT LIM
40 BLK CENT
BLKLMT
CTRL
39 BLK LIM
38 VCOM OUT
37 SIG CENT CTR
36 VCOM CTR
EA
BUFF
R CLAMP 67
S/H
EA
PRG
G CLAMP 66
35 PRG
34 GND
R GAM GAIN1 69
B GAM GAIN1 70
RGB GAM GAIN2 71
R GAM GAIN2 72
B GAM GAIN2 73
RGB GAM CTR2 74
R GAM CTR2 75
B GAM CTR2 76
RGB GAM CTR1 77
R GAM CTR1 78
B GAM CTR1 79
R
γ
CONT
RGB GAM GAIN1 68
SID
33 SID FRP
32 FRP
S/H
S/H
GCA
EA
S/H
BUFF
RGB
γ
CONT
31 PRG CTR
30 SID CTR
29 SID CLP
B
γ
CONT
γ
AMP
γ
AMP
γ
AMP
28 R CLP
SW
BUFF
BUFF
27 G CLP
26 B CLP
SW
BUFF
25 R SBRT
SBRT
CONT
24 B SBRT
23 RGB SBRT
22 GND
SW
BUFF
CLP
CLP
N.C. 80
BRT
CONT
CLP
21 N.C.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
GND
N.C.
RGB MBRT
GAM OUT
SID OUT
N.C.
V
CC
1
V
CC
2
N.C.
R OUT
N.C.
R MBRT
G OUT
B MBRT
B OUT
–2–
V
CC
3
N.C.
RIN
GIN
BIN
CXA1853AQ
Pin Description
Pin
NO.
Symbol
Pin voltage
V
CC
1
2k
200
37k
80k
80k
40µA
40µA
(V
CC
1 = 5V, V
CC
2 = 13V)
Equivalent circuit
Description
1
RGB MBRT
1.6 to 5.0V
∗
1
RGB signal common main
brightness control. Preset
internally to 3.3V.
40µA
GND
V
CC
1
4
R MBRT
1.6 to 5.0V
∗
200
4
5
5k
80k
74k
80k
40µA
20µA
V
CC
1
100
R signal main brightness
control. Preset internally to
3.3V.
B signal main brightness
control. Preset internally to
3.3V.
5
B MBRT
1.6 to 5.0V
∗
GND
20µA
2V
Reference level
7
GAM OUT
7
G signal output of which main
bright and gamma are
adjusted and insert the
reference signal.
100
GND
8
9
V
CC
1
RIN
5V
V
CC
1
50µA
9
200
5V power supply.
R signal input.
Input a 0.7Vp-p signal.
Note 2)
G signal input.
Input a 0.7Vp-p signal.
Note 2)
B signal input.
Input a 0.7Vp-p signal.
Note 2)
GND.
V
CC
2
10
GIN
10
11
6.2k
11
12
BIN
GND
0V
GND
13
SID OUT
9.3Vp-p
Typ.
10
13
10
SID signal output.
GND
Note 1)
∗
in the Pin voltage indicates external applied voltage.
Note 2)
Defined as the amplitude from the pedestal level to white.
–3–
CXA1853AQ
Pin
NO.
14
15
V
CC
2
Symbol
Pin voltage
13V
V
CC
2
Equivalent circuit
Description
13V power supply.
R signal output.
15
16
R OUT
16
G OUT
4.5V
Typ.
10
10
G signal output.
17
17
18
22
B OUT
V
CC
3
GND
5V
0V
GND
B signal output.
5V power supply.
GND.
V
CC
3
3k
200
200
27k
23
RGB SBRT
1.6 to 5.0V
∗
23
RGB signal common sub
brightness control.
13µA
53µA
GND
53µA
24
B SBRT
1.6 to 5.0V
∗
V
CC
3
3k
200
24
25
118k
80k
40µA
26µA
80k
B signal sub brightness
control.
Preset internally to 3.3V.
25
R SBRT
1.6 to 5.0V
∗
26µA
GND
R signal sub brightness
control.
Preset internally to 3.3V.
26
B CLP
V
CC
2
26
200
2k
B output detection signal
input.
G output detection signal
input.
10µA
27
G CLP
4.7 to 8.3V
∗
27
28
28
R CLP
GND
R output detection signal
input.
Note)
∗
in the Pin voltage indicates external applied voltage.
–4–
CXA1853AQ
Pin
NO.
Symbol
Pin voltage
V
CC
2
Equivalent circuit
Description
200
2k
29
SID CLP
4.7 to 8.3V
∗
29
10µA
GND
V
CC
3
3k
200
80k
35k
80k
40µA
53µA
SID output detection signal
input.
Use an average value
detecting external capacitor
with a small leak current
absolute value and
tolerance.
30
SID CTR
1.6 to 5.0V
∗
30
SID output amplitude control.
Preset internally to 3.3V.
53µA
GND
V
CC
3
3k
90k
31
PRG CTR
1.6 to 5.0V
∗
200
31
Level control for the PRG
signal inserted into the SID
signal.
90k
GND
V
CC
3
10µA
32
FRP
5V
0V
32
200
FRP input. This pulse is
used to invert the polarity of
the RGB output. Output is
inverted when Low, and non-
inverted when High.
Input level: High
≥
4V
Low
≤
1V
GND
V
CC
3
10µA
33
SID FRP
0V
5V
33
200
GND
FRP pulse input for SID
output. This pulse is used to
invert the polarity of the SID
output. Output is inverted
when Low, and non-inverted
when High.
Input level: High
≥
4V
Low
≤
1V
GND.
34
GND
0V
Note)
∗
in the Pin voltage indicates external applied voltage.
–5–
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