KA2140b.pdf

(142 KB) Pobierz
KA2140B.fm
APRIL. 1998
DATA SHEET
KA2140B
383829466.012.png
R/G/B VIDEO AMPLIFIER WITH OSD INTERFACE FOR MONITORS
KA2140B
R/G/B VIDEO AMPLIFIER
28-DIP-600A
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.
FUNCTIONS
• R/G/B Video Amplifier
• OSD Interface
ORDERING INFORMATION
• Contrast/OSD Contrast/SUB Contrast Control
Device
Package
Operating Temperature
• Brightness Control
KA2140B 28-DIP
-25 C ~ +80 C
• Blank/Clamp Gate
• Video Clamp
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 7.5V PP Output Swing Range
• Video/OSD high speed Switch
1
383829466.013.png
KA2140B R/G/B VIDEO AMPLIFIER WITH OSD INTERFACE FOR MONITORS
BLOCK DIAGRAM
ONE (RED)
OF THREE CHANNELS
ROSD
1
_
+ A1
28
RDRIVE
GOSD
2
27
GDRIVE
BOSD
3
SWITH
CONTROL
VIDEO
SUB_CONTRAST
CONTROL
26
BDRIVE
4
VI/OSD_SW
25
BRIGHT
5
_
+ A2
OSD
CONTRAST
24
RIN
RCLP
VIDEO
OSD
SWITCH
+
VIDEO
SUB_CONTRAST
-A5
6
23
VCC1
gm1
ROUT
VIDEO
CONTRAST
GND1
7
_
+ A3
22
VCC3
-A4
GIN
8
21
GND4
VCC2
9
gm2
20
GOUT
GND2
10
19
GCLP
BIN
11
18
BOUT
GND3
12
CONTRAST
CONTROL
CLAMP
GATE
BLANK
GATE
17
BCLP
CONST
13
16
BLK
OSD _CONST
14
OSD
CONTRAST
CONTROL
15
CLP
2
383829466.014.png 383829466.015.png 383829466.001.png 383829466.002.png 383829466.003.png 383829466.004.png 383829466.005.png 383829466.006.png 383829466.007.png 383829466.008.png 383829466.009.png
R/G/B VIDEO AMPLIFIER WITH OSD INTERFACE FOR MONITORS
KA2140B
PIN CONFIGURATIONS
Table 1. Pin Configurations
Pin No
Symbol
I/O
Configurations
1
ROSD
I
Red OSD Input
2
GOSD
I
Green OSD Input
3
BOSD
I
Blue OSD Input
4
VI/OSD_SW
I
Video or OSD Switch
5
RIN
I
Red Video Input
6
V CC1
-
V CC (Normal)
7
GND1
-
Ground 1
8
GIN
I
Green Video Input
9
V CC2
-
V CC (Normal)
10
GND2
-
Ground 2
11
BIN
I
Blue Video Input
12
GND3
-
Ground 3
13
CONST
I
Contrast Control
14
OSD_CONST
I
OSD Contrast Control
15
GCLP
I
Clamp Gate Signal Input
16
BLK
I
Blank Gate Signal Input
17
BCLP
-
Blue Clamp Cap
18
BOUT
O
Blue Clamp Video Output
19
GCLP
-
Green Clamp Cap
20
GOUT
O
Green Video Output
21
GND4
-
Ground 4
22
V CC3
-
V CC (Output Part)
23
ROUT
O
Red Video Output
24
RCLP
-
Red Clamp Cap
25
BRIGHT
I
Brightness Control
26
BDRIVE
I
Blue Gain Control
27
GDRIVE
I
Green Gain Control
28
RDRIVE
I
Red Gain Control
3
383829466.010.png
KA2140B R/G/B VIDEO AMPLIFIER WITH OSD INTERFACE FOR MONITORS
PIN DESCRIPTION
Table 2. Pin Description
Pin No
Pin Name
Schematic
Description
VCC
1
Red OSD Input
(ROSD)
Green OSD Input
(GOSD)
Blue OSD Input
(BOSD)
OSD input signals are in TTL
level and will be connected to
ground when switching to video
input
2
3
1.4V
PIN 1
VCC
5.6V
4
Video/OSD
Switch
(VI/OSD_SW)
Video/OSD Switch signal is TTL
Level.
OSD Input = “High”
Video Input = “Low”
PIN 4
VCC
5
Red Video Input
(RIN)
Green Video Input
(GIN)
Blue Video_in)
Input CLP
MAX Input Video Signal is 0.7
Vpp
8
11
PIN 5
6
V CC 1
Supply Voltage
(Except Drive Stage)
-
9
V CC 2
7
GND1
-
Ground
10
GND2
4
383829466.011.png

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika:

Zgłoś jeśli naruszono regulamin