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TDA4882 Datasheet, PDF (4/28 Pages) NXP Semiconductors – Advanced monitor video controller for OSD | |||
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Philips Semiconductors
Advanced monitor video controller for OSD
5 BLOCK DIAGRAM
Product speciï¬cation
TDA4882
handbook, full pagewidth
VP
10 kâ¦
1
brightness
control
signal
input 22 nF
2
75 ⦠10 Mâ¦
VOLTAGE
CONVERTER
CLAMP
CLIPPING
VP
10 kâ¦
3
gain
control
4
signal
input 22 nF
5
75 ⦠10 Mâ¦
VOLTAGE
CONVERTER
CHANNEL 1
CLAMP
CLIPPING
VP
10 kâ¦
6
contrast
control
VP
7
signal
input 22 nF
8
75 ⦠10 Mâ¦
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 kâ¦
VCRT = 90 V
voltage
19 output
33 â¦
BFQ235
33 â¦
18 feedback
BAV21
220 â¦
68 kâ¦
8V
15 kâ¦
6.8 kâ¦
10 kâ¦
cut-off
control
current
17 output
1.5 kâ¦
BFQ236
voltage
16 output
33 â¦
BFQ235
33 â¦
10 â¦
1 kâ¦
10 â¦
15 feedback
BFQ256
VCRT = 90 V
BAV21
25 MHz
220 ⦠40 MHz
CRT
68 kâ¦
8V
15 kâ¦
6.8 kâ¦
10 kâ¦
60 MHz
cut-off
control
current
14 output
voltage
13 output
BFQ235
18 â¦
18 â¦
12 feedback
860 â¦
VCRT = 65 V
BFQ236
10 â¦
1 kâ¦
47 nF
BAV21
100 â¦
10 â¦
BFQ256
93
kâ¦
10 kâ¦
VCRT
10 kâ¦
cut-off
control
5.8 V
11
VP
10 kâ¦
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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