R/G/B VIDEO AMPLIFIER WITH OSD INTERFACE FOR MONITORS
R/G/B VIDEO AMPLIFIER WITH OSD INTERFACE FOR MONITORS
KA2140B
R/G/B VIDEO AMPLIFIER
The KA2140B is a very high frequen...
Description
R/G/B VIDEO AMPLIFIER WITH OSD INTERFACE FOR MONITORS
KA2140B
R/G/B VIDEO AMPLIFIER
The KA2140B is a very high frequency video amplifier system with an OSD interface, intended to be used in monitor with high resolution up to 1280 × 1024. It contains 3 matched R/G/ B video Amplifiers with Blank signal and provides a flexible interfacing to DC controlled adjustment system.
28-DIP-600A
FUNCTIONS
R/G/B Video Amplifier OSD Interface Contrast/OSD Contrast/SUB Contrast Control Brightness Control Blank/Clamp Gate Video Clamp
Device KA2140B Package 28-DIP Operating Temperature -25 °C ~ +80 °C
ORDERING INFORMATION
FEATURES
3 - Channel R/G/B Video Amplifier, 130MHz Bandwidth TTL OSD Input, 50MHz Bandwidth DC Contrast Contol range: -38dB DC SUB Contrast Control range: -11dB Capable of 7.5VPP Output Swing Range Video/OSD high speed Switch
1
KA2140B
R/G/B VIDEO AMPLIFIER WITH OSD INTERFACE FOR MONITORS
BLOCK DIAGRAM
ONE (RED) OF THREE CHANNELS
ROSD GOSD
1 2 3 4
_ A1 +
28 27 26
VIDEO SUB_CONTRAST CONTROL
RDRIVE GDRIVE
BOSD VI/OSD_SW
SWITH CONTROL
BDRIVE BRIGHT
25 24
RIN VCC1 GND1 GIN
5 6
_ A2 + VIDEO OSD SWITCH
OSD CONTRAST
RCLP ROUT
+
VIDEO CONTRAST
VIDEO SUB_CONTRAST
-A5
gm1 +
7
_ A3 + -A4
8
VCC2
9
gm2 +
GND2
10 11 12 13 14
OSD CONTRAST CONTROL CONTRAST CONTROL CLAMP GATE BLANK GATE
BIN GND3 CONST
OSD _CONST
2
_
_
23
22 21
VCC3 GND4
20
GOUT GCLP
19 18 17 16 15
BOUT BCLP BLK CLP
R/G/B VIDEO AMPLIFIER WITH OSD INTERFAC...
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