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TDA4780/V4 데이터 시트보기 (PDF) - Philips Electronics
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TDA4780/V4
RGB video processor with automatic cut-off control and gamma adjust
Philips Electronics
TDA4780/V4 Datasheet PDF : 44 Pages
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Philips Semiconductors
RGB video processor with automatic
cut-off control and gamma adjust
BLOCK DIAGRAM
Preliminary specification
TDA4780
handbook, full pagewidth
FSW1
FSW2
FSW1
13
FSW2
1
Y - output /
peak dark hue adjust
storage
output
VP = 8 V
1
µ
F
CPDST
YHUE
GND VP
18
26
9
5
200
µ
F
TDA4780
10 nF
R1
10 nF
G1
10 nF
B1
10 nF
R2
10 nF
G2
10 nF
B2
R1
10
G1
11
B1
12
R2
2
G2
3
B2
4
−
(B
−
Y)
−
(R
−
Y)
Y
10 nF
−
(B
−
Y) 6
10 nF
−
(R
−
Y) 7
47 nF
Y8
CLAMP
CLAMP
CLAMP
0.45 V
Y
1.43 V
R
PAL / SECAM
NTSC
G
MATRIX
B
NMEN
INPUT
SELECTOR
DELOF HDTV
SC5 FSBL
YHI
YEXH RELC
BCOF TCPL
CONTROL REGISTERS
YEXH
SUPPLY
HUE
ADJUST
BANDGAP
REFERENCE
Y
Y - MATRIX
Y
ADAPTIVE
BLACK
R
R
−
Y
G
COLOUR
DIFFERENCE
G
−
Y
B
MATRIX
B
−
Y
ADBL
UGAP
a
YBL
GAMMA
Y
gamma
BL
R
b
SATURATION G
c
ADJUST
Bd
8 DATA
6 DATA
e
f
REGISTERS
DIGITAL TO ANALOG CONVERTERS
g
UGAP
CL
SC5
h
BREN
I
2
C-BUS V
RECEIVER
SANDCASTLE HV
i
DETECTOR
(H)
DELOF
j
28
SCL
27
SDA
I
2
C-bus
14
SC
sandcastle input
MGE875
1997 Feb 06
Fig.1 Block diagram (continued in Fig.2).
4
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