LG StudioWorks E700B - Video Amplifier and Bias Clamp IC Details

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LM1269 110 MHz I
2
C RGB Video Amplifier System with OSD & DACs
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
R OSD
G OSD
B OSD
R Video
G Video
B Video
OSD
Select
Analog
GND
Vcc
SDA
SCL
V
REF
R
EXT
V
REF
V
REF
OUT
R
R
Analog/
Digital
OSD
Contrast
To Other Video Channels
Clamp DC
Restore Amp
H Blank
H Flyback
Clamp
ABL
R Out
G Out
B Out
Digital
GND
DAC 1
DAC 2
DAC 3
DAC 4
Hi Z Input
Buffer Amp
Contrast
Auto Beam
Limit Amp
OSD
Mixer
Gain
Output
Buffer Amp
DC DACs
Offset
R
R
R
R
Register’s
To internal
Block with "R"
DACs
I C Interface
2
112
1324
Block and Connection Diagram
LM2480 80V Triple Bias Clamp
V1
IN
V1
OUT
V2
OUT
V3
OUT
V
CC
V2
IN
V
GND
3
IN
OUTPUT
INPUT
IBIAS
18 R
35k
R
Vcc
Block Diagram
Pin Configuration