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TDA4780 Datasheet(PDF) 5 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) 5 Page - NXP Semiconductors

 
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1997 Feb 06
5
Philips Semiconductors
Preliminary specification
RGB video processor with automatic
cut-off control and gamma adjust
TDA4780
Fig.2 Block diagram (continued from Fig.1).
handbook, full pagewidth
j
i
h
g
e
f
d
c
b
a
MGE876
82 k
1
µF
TDA4780
CONTRAST
ADJUST
BRIGHTNESS
ADJUST
REGISTERS
DIGITAL ANALOG CONVERTERS
TIMING
GENERATOR
B
G
R
B
B
B
G
R
FSBL
NMEN
HDTV
BLANK
MP
CL
HV
(H)
WHITE
POINT
ADJUST
MP
BLANK
WHITE
POINT
ADJUST
MP
BLANK
WHITE
POINT
ADJUST
MP
BLANK
BLUE
STRETCH
VOLTAGE
COMPARATOR
VOLTAGE
COMPARATOR
MINIMUM
DETECTOR
PEAK DRIVE
LIMITER
CUT-OFF RELATED
PEAK DRIVE
LIMITER
ABSOLUTE LEVEL
TCPL
RELC
RELC
AVERAGE
BEAM
CURRENT
LIMITING
R
G
B
OUTPUT
BUFFER
OUTPUT
BUFFER
OUTPUT
BUFFER
1st AND 2nd
SWITCH-ON
DELAY
CUT-OFF
CONTROL
LEAKAGE
CURRENT
COMPARATOR
OUTPUT
CLAMP
BCL
15
16
CPDL
24
22
20
RO
GO
BO
19 CI
UGAP
UGAP
BCOF
BCOF
25
23
21
CR
CG
CB
17
CL
MOD2
220 nF
330 nF
220 nF
220 nF
cut-off storage
leakage storage
leakage and
cut - off
current input
RGB
outputs
to
video
amplifiers
peak drive
limiting storage
average beam
current limiting
input


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