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TDA4780 Просмотр технического описания (PDF) - Philips Electronics
Номер в каталоге
Компоненты Описание
производитель
TDA4780
RGB video processor with automatic cut-off control and gamma adjust
Philips Electronics
TDA4780 Datasheet PDF : 44 Pages
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Philips Semiconductors
RGB video processor with automatic
cut-off control and gamma adjust
Preliminary specification
TDA4780
handbook, full pagewidth
average beam
current limiting
input
BCL
15
AVERAGE
BEAM
CURRENT
LIMITING
peak drive
limiting storage
1
µ
F
CPDL
16
PEAK DRIVE
LIMITER
ABSOLUTE LEVEL
RELC
MINIMUM
DETECTOR
PEAK DRIVE
LIMITER
CUT-OFF RELATED
TDA4780
VOLTAGE
COMPARATOR
VOLTAGE
COMPARATOR
TCPL RELC
a
WHITE
R
POINT
ADJUST
OUTPUT
BUFFER
b
R
R
c
CONTRAST G
BRIGHTNESS G
ADJUST
ADJUST
B
B
d
MOD2
B
BLUE B
STRETCH
e
f
MP
BLANK
WHITE
G
POINT
ADJUST
MP
BLANK
WHITE
B
POINT
ADJUST
OUTPUT
BUFFER
OUTPUT
BUFFER
g
CL
h
i
HV
(H)
j
REGISTERS
DIGITAL ANALOG CONVERTERS
NMEN BLANK
FSBL HDTV
MP
MP
BLANK
BCOF
CUT-OFF
CONTROL
UGAP
BCOF
OUTPUT
CLAMP
TIMING
GENERATOR
1st AND 2nd
SWITCH-ON
DELAY
LEAKAGE
CURRENT
COMPARATOR
17
UGAP
CL
330 nF
leakage storage
21
CB
220 nF
23
CG
220 nF
25
CR
220 nF
cut-off storage
24 RO
22 GO
RGB
outputs
to
video
amplifiers
20 BO
19 CI
leakage and
cut - off
current input
82 k
Ω
MGE876
1997 Feb 06
Fig.2 Block diagram (continued from Fig.1).
5
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