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TDA4882 Просмотр технического описания (PDF) - Philips Electronics
Номер в каталоге
Компоненты Описание
производитель
TDA4882
Advanced monitor video controller for OSD
Philips Electronics
TDA4882 Datasheet PDF : 28 Pages
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Philips Semiconductors
Advanced monitor video controller for OSD
5 BLOCK DIAGRAM
Product specification
TDA4882
handbook, full pagewidth
VP
10 k
Ω
1
brightness
control
signal
input 22 nF
2
75
Ω
10 M
Ω
VOLTAGE
CONVERTER
CLAMP
CLIPPING
VP
10 k
Ω
3
gain
control
4
signal
input 22 nF
5
75
Ω
10 M
Ω
VOLTAGE
CONVERTER
CHANNEL 1
CLAMP
CLIPPING
VP
10 k
Ω
6
contrast
control
VP
7
signal
input
22 nF
8
75
Ω
10 M
Ω
REF
GAIN
VOLTAGE
CONVERTER
CHANNEL 2
+
CLAMP
CLIPPING
horizontal blanking
switch off
9
VOLTAGE
CONVERTER
CHANNEL 3
input
clamping
blanking
test mode
ultra black
output clamping
10
clamping pulse
vertical blanking
test mode
PULSE
DECODER
VP = 8 V
6.2 V
TDA4882
current
20
output
1.5 k
Ω
VCRT = 90 V
voltage
19
output
33
Ω
BFQ235
33
Ω
18 feedback
BAV21
220
Ω
68 k
Ω
8V
15 k
Ω
6.8 k
Ω
10 k
Ω
cut-off
control
current
17
output
1.5 k
Ω
BFQ236
voltage
16
output
33
Ω
BFQ235
33
Ω
10
Ω
1 k
Ω
10
Ω
15 feedback
BFQ256
VCRT = 90 V
BAV21
25 MHz
220
Ω
40 MHz
CRT
68 k
Ω
8V
15 k
Ω
6.8 k
Ω
10 k
Ω
60 MHz
cut-off
control
current
14
output
voltage
13
output
BFQ235
18
Ω
18
Ω
12 feedback
860
Ω
VCRT = 65 V
BFQ236
10
Ω
1 k
Ω
47 nF
BAV21
100
Ω
10
Ω
BFQ256
93
k
Ω
10 k
Ω
VCRT
10 k
Ω
cut-off
control
5.8 V
11
VP
10 k
Ω
gain
control
horizontal blanking
MED910
1997 Sep 04
Fig.1 Block diagram and basic application circuits for DC and AC coupling.
4
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