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Part: CXA1853
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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-andhold circuit · Effective frequency response (18MHz Typ.) · Built-in gain and breakpoint variable 2-point 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 VCC1 6 VCC2 15 · Input pin voltage VIN VCC1 · Operating temperature Topr 25 to +75 · Storage temperature Tstg 55 to +150 · Allowable power dissipation PD 1500 Operating Conditions · Supply voltage
V V V °C °C mW
VCC1 VCC2 · RGB input signal voltage VIN
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
S H4
VCC4
N.C.
S H2
S H3
41
SH1 61 PVCC 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 CONT
RGB GAM GAIN1 68
SID
33 SID FRP 32 FRP
S/H
S/H GCA EA S/H BUFF
RGB CONT
31 PRG CTR 30 SID CTR 29 SID CLP
B CONT
AMP
AMP
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.
VCC1
VCC2
N.C.
R OUT
N.C.
R MBRT
G OUT
B MBRT
B OUT
2
VCC3
N.C.
RIN
GIN
BIN
CXA1853AQ
Pin Description Pin NO. Symbol Pin voltage
VCC1 2k 200 37k 80k 80k 40µA 40µA
(VCC1 = 5V, VCC2 = 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
VCC1
4
R MBRT
1.6 to 5.0V
200 4 5
5k 80k 74k 80k 40µA 20µA VCC1 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
VCC1 RIN
5V
VCC1 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.
VCC2
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 VCC2
Symbol
Pin voltage 13V
VCC2
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 VCC3 GND 5V 0V
GND
B signal output. 5V power supply. GND.
VCC3 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
VCC3 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
VCC2 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
VCC2
Equivalent circuit
Description
200
2k
29
SID CLP
4.7 to 8.3V
29
10µA GND VCC3 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
VCC3 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 VCC3 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 noninverted when High. Input level: High 4V Low 1V
GND VCC3 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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