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Pin No.
Terminal name
47
AGC OUT
48
PICTURE
• Block Diagram
3
VIDEO IN
44
F ADI
REG1
COMP
CIN
5
ACC
Y/C
7
BURST
CLEANING
11
ACC DET
ACC FIL
15
APC
APC FIL
14
16
VCO
13
TINT
4
Vcc
SYNC IN
IDENT FIL
GND
GND Vcc1 Vcc2
17
18
43
9-20. IC1900 BA7046F
Pin No.
1
A horizontal oscillation backlash terminal
2
HD output terminal
3
SYNC output terminal (Open Collector)
4
VD output terminal
5
GND terminal
6
Video input terminal
7
Power terminal
8
Phase comparator output terminal
It is the terminal which the voltage detected in the automatic gain control detector circuit of the luminance
signal is outputted in.
Output voltage rises the output voltage.
The frequency characteristic of the luminance signal can do adjustment.
When a voltage is lowered, emphasis is put on the contour.
TRAP
COLOR
1
6
COMP
TRAP
Y/C
N
P
REG2
REG3
HPF
COLOR
PAL ON
KILLER
N
P
PHASE
SHIFT
PAL SW
IDENT
P
F/F
N
CHROMA
OUT
23
8
12
KILLER FIL
Function
Operation function
SYNC SEP
SYNC
OUT
AGC FIL
CLAMP
SYNC
IN
COM
AGC
OUT
OUT
45
47
46
36
35
34
38
SYNCSEP
AGCDET
AGCAMP
CLAMP
F/F
Window
Pulse GEN
BGP GEN
BGP
DEMOD
N P N
P
PICTURE
B-Y
R-Y
10
9
48
PICTURE
• Block Diagram
9-24
COM AMP
ADJ
R DC DET
G DC DET
B DC DET
R OUT
G OUT
37
20
19
22
21
25
INV
INV
INV
ϒ
ϒ
ϒ
AMP
AMP
AMP
INT/EXT SW
Y
MATRIX
R-Y
G-Y
B-Y
H. OSC
V. SEPA
DV-L70U
B OUT
24
VREF
RGB AMP ADJ
33
FRP
32
COM FRP
ϒ0
27
ϒ2
26
BRIGHT
29
SUB BRIGHT B
30
SUB BRIGHT R
31
39
SW
40
EXT B IN
41
EXT G IN
42
EXT R IN
2
CONTRAST
PHASE
COMP
SYNC
SEPA
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