KA2143B Datasheet, PDF (3/12 Pages) Samsung semiconductor – R/G/B VIDEO AMPLIFIER WITH OSD INTERFACE FOR MONITORS

KA2143B
BLOCK DIAGRAM
R/G/B VIDEO AMPLIFIER WITH OSD INTERFACE FOR MONITORS
ROSD
1
GOSD
2
BOSD
3
VI/OSD_SW 4
RIN
5
VCC1
6
GIN
7
GND1
8
BIN
9
CONST 10
OSD_ CONST 11
CLP
12
ONE (RED)
OF THREE CHANNELS
_
A1
+
_
A2
+
gm1
SWITH
CONTROL
VIDEO
SUB_CONTRAST
CONTROL
VIDEO
OSD
SWITCH
OSD
CONTRAST
+
VIDEO
SUB_CONTRAST
-A5
VIDEO
CONTRAST
_
A3
-A4
+
OSD
CONTRAST
CONTROL
CONTRAST
CONTROL
gm2
1.5V
CLAMP
GATE
BLANK
GATE
24 RDRIVE
23 GDRIVE
22 BDRIVE
21
GND2
20
RCLP
19 ROUT
18 VCC2
17
GCLP
16 GOUT
15
BCLP
14
BOUT
13
BLK
2