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TDA4780 Datasheet(PDF) 4 Page - NXP Semiconductors

Part No. TDA4780
Description  RGB video processor with automatic cut-off control and gamma adjust
Download  44 Pages
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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TDA4780 Datasheet(HTML) 4 Page - NXP Semiconductors

 
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1997 Feb 06
4
Philips Semiconductors
Preliminary specification
RGB video processor with automatic
cut-off control and gamma adjust
TDA4780
BLOCK DIAGRAM
Fig.1 Block diagram (continued in Fig.2).
handbook, full pagewidth
j
i
h
g
e
f
d
c
b
a
MGE875
200
µF
1
µF
CLAMP
TDA4780
CLAMP
CLAMP
0.45 V
1.43 V
PAL / SECAM
NTSC
MATRIX
INPUT
SELECTOR
Y - MATRIX
COLOUR
DIFFERENCE
MATRIX
ADAPTIVE
BLACK
Y
Y
YBL
GAMMA
Y
gamma
BL
SATURATION
ADJUST
HUE
ADJUST
BANDGAP
REFERENCE
SUPPLY
CONTROL REGISTERS
TCPL
RELC
BCOF
YEXH
HDTV
FSBL
DELOF
SC5
YHI
REGISTERS
DIGITAL TO ANALOG CONVERTERS
I2C-BUS
RECEIVER
SANDCASTLE
DETECTOR
8 DATA
BREN
V
SC5
DELOF
B
G
R
CL
HV
(H)
NMEN
10
11
12
R1
G1
B1
R2
G2
B2
2
3
4
6
7
8
−(B − Y)
−(B − Y)
−(R − Y)
−(R − Y)
Y
Y
47 nF
10 nF
10 nF
10 nF
10 nF
10 nF
10 nF
10 nF
10 nF
13
FSW1
FSW2
FSW1
FSW2
1
18
26
CPDST
YHUE
GND
9
5
VP
UGAP
14
SC
27
28
SCL
SDA
R1
G1
B1
R2
G2
B2
ADBL
R
− Y
G
− Y
B
− Y
R
G
B
R
G
B
Y
YEXH
UGAP
sandcastle input
I2C-bus
VP = 8 V
Y - output /
hue adjust
output
peak dark
storage
6 DATA


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