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Электронный компонент: CXA1870

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--1--
E95431-TE
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.
Absolute Maximum Ratings (Ta=25 C)
Supply voltage
V
CC
12
V
Operating temperature
Topr
20 to +75
C
Storage temperature
Tstg 65 to +150 C
Allowable power dissipation
P
D
1.73
W
Recommended Operating Conditions
Supply voltage
V
CC
90.5
V
Description
The CXA1870S is a bipolar IC which integrates the
NTSC color TV luminance signal processing,
chroma signal processing, sync signal processing,
and RGB signal processing onto a single chip.
Features
I
2
C bus compatible. Various types of adjustments
and user controls performed with two bus lines
SCL and SDA.
H and V oscillation frequencies made non-
adjusting with a countdown system.
Non-adjusting Y system filters (chroma trap, delay
line)
Built-in V picture distortion correction circuit
Built-in delay line aperture compensation
Auto cut-off function for automatic CRT cut-off
adjustment and compensation for changes with
time
Multiple inputs
Composite video:
2 systems
(Built-in 2-input, 1-output video switch)
Y/C separation input:
1 system
On screen display input: 1 system
Applications
Color TV
Structure
Bipolar silicon monolithic IC
Color TV Y/C/Jungle
42 pin SDIP (Plastic)
CXA1870S
For the availability of this product, please contact the sales office.
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CXA1870S
Block Diagram
C
O
L
O
R
2
f
H
A
B
L
H

P
H
A
S
E
BOUT
GOUT
ROUT
Y IN
V1 IN
V2 IN
C IN
V
CC
T
R
A
P

S
W
T
O
T

S
W
C
O
L
O
R
S
U
B

H
U
E
OSD
D
R
I
V
E
G DRIVE
B DRIVE
I
K
G

C
U
T
O
F
F
B

C
U
T
O
F
F
DC TRAN
SHARPNESS
A
F
C
H
L
O
C
K
N
R
R
E
F
G
A
M
M
A
GAMMA
C

M
O
D
E
H
V

C
O
M
P
V SHIFT
V SIZE
V LIN
S CORR
V

O
F
F
A
B
L
PMUTE
R OFF
G OFF
B OFF
SCL
SDA
IREF
H SYNC
REG
AFC
CERA
XRAY
HD
J GND
V SYNC
V PLS
VOSC
VD
ABL IN
ABL LPF
V LPF
V HOLD
HP
H S/S OUT
V BIAS
P
I
C
T
U
R
E
B
R
I
G
H
T
B
R
I
G
H
T
S
U
B

B
R
I
G
H
T
DY COL
A
X
I
S
H
U
E
S
U
B

C
O
L
O
R
PRE OVER
B
L
U
E
B
L
A
C
K
APC
X'TAL
A PED
V GND
IK
R S/H
G S/H
B S/H
OSD
BLK
OSD R
OSD G
OSD B
X
R
A
Y
L
I
M
I
T
RGB LIM
K
I
L
L
E
R
I
2
C

B
U
S
D
E
C
O
D
E
R
I
R
E
F
R
E
G
U
L
A
T
O
R
H
.
S
Y
N
C
S
E
P
P
H
A
S
E
D
E
T
.
3
2
f
H
V
C
O
1
/
3
2
P
H
A
S
E
D
E
T
P
H
A
S
E
S
H
I
F
T
H
.
D
R
I
V
E
X
R
A
Y
V
E
X
V
.
S
Y
N
C
S
E
P
V

C
O
U
N
T
D
O
W
N
V
O
S
C
V

C
O
M
P
E
N
S
A
T
I
O
N
V

Z
O
O
M
I
N
G
B
L
K
1
6
1
8
2
0
D
C
S
H
I
F
T
D
Y
N
A
M
I
C
C
O
L
O
R
O
S
D
M
I
X
P
I
C
T
U
R
E
R
G
B
S
W
Y
M
Y
/
C

M
I
X
C
L
A
M
P
A
U
T
O
P
E
D
E
S
T
A
L
C
L
A
M
P
N
R
S
H
A
R
P
N
E
S
S
D
E
L
A
Y
T
R
A
P
B
U
S
C
O
N
T
S
U
B

C
O
N
T
0
/
6
D
B

A
M
P
S
W
G
A
I
N
I
N
S
W
D
E
L
A
Y
A
K
B
A
K
B
T
I
M
I
N
G
C
L
A
M
P
O
S
D

B
L
K
A
X
I
S
C
H
R
O
M
A
D
E
T
.
P
H
A
S
E
S
H
I
F
T
3
.
5
8
M
V
C
O
L
P
F
H
U
E
1
2
1
3
1
4
1
0
1
9
1
7
1
5
1
1
2
1
8
1
2
P
H
A
S
E
D
E
T
.
C
O
L
O
R
K
I
L
L
E
R
T
O
T
A
C
C
A
C
C
D
E
T
.
3
7
4
6
2
2
9
3
1
2
9
3
2
2
6
2
4
2
5
2
3
3
8
3
7
3
6
3
5
4
0
3
4
3
9
3
3
3
0
4
1
5
2
7
4
2
2
8
SW OUT
--3--
CXA1870S
Pin Configuration
V2 IN
V BIAS
SDA
SCL
V SYNC
H SYNC
H S/S OUT
REG
IREF
AFC
CERA
J GND
HP
XRAY
HD
V PLS
V LPF
V OSC
ABL LPF
VD
ABL IN
X'TAL
V
CC
APC
V1 IN
A PED
Y IN
C IN
V GND
OSD BLK
OSD R
OSD G
OSD B
R S/H
R OUT
G S/H
G OUT
B S/H
B OUT
IK
V HOLD
SW OUT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
29
30
31
32
33
35
36
37
38
39
40
41
42
28
34
--4--
CXA1870S
Pin Description
Pin
No.
1
2
3
4
22
5
Symbol
X'TAL
APC
V
CC
V1 IN
V2 IN
V HOLD
Pin
voltage
2.6 V
5 V
9 V
2 V
0.7 V
Description
Connect a 3.58 MHz crystal
oscillator.
APC lag-lead filter CR connection
pin.
Power supply pin.
Video switch input pins. Sync tip
clamping is performed, so input
via capacitors.
Peak hold pin for V sync
separation. Connect a capacitor.
500
4k
1
V
CC
1.2k
25k
1.2k
2
V
CC
V
CC
150
1k
55k
50k
5
V
CC
150
4
22
V
CC
Equivalent circuit
--5--
CXA1870S
Pin
No.
6
7
8
9
10
Symbol
SW OUT
Y IN
A PED
C IN
V GND
Pin
voltage
--
3.5 V
3.5 V
--
--
Description
Video switch output pin.
Y signal input pin. Input via a
capacitor.
Standard input level: 2 Vp-p
Auto pedestal (black elongation)
black peak hold pin. Connect a
capacitor.
Chroma signal input pin.
Standard input level (burst level):
570 mVp-p
Video system (Y/C/RGB) GND
pin.
2k
30k 12k
25k
500
6
V
CC
V
CC
V
CC
50k
1.2k
7
V
CC
V
CC
6k
6k
30k
30k
9
V
CC
16k
20k
20k
1.2k
8
V
CC
V
CC
V
CC
V
CC
Equivalent circuit