ka2139 Samsung Semiconductor, Inc., ka2139 Datasheet

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ka2139

Manufacturer Part Number
ka2139
Description
3 Channel R.g.b Video Amplifier
Manufacturer
Samsung Semiconductor, Inc.
Datasheet
KA2139
3 CHANNEL R.G.B VIDEO AMPLIFIER
The KA2l39 is a monolithic integrated circuit for processing
the R,G,B video in high resolution CRT display.
It contains 3 channel video amplifier, black level clamp
comparator for brightness control and DC control attenuator
for contrast control, this device is suitable for monitor.
FUNCTIONS
FEATURES
BLOCK DIAGRAM
R. G. B amplifier
Contrast control
Clamp & brIghtness circuit
Vref. circuit
3 Channel R.G.B video amplifier (f.
Superior linearity contrast control
Black level clamp comparator for
Built-in clamp gate circuit to operate the
Vref 2.4V bandgap circuit
brightness control
clamp comparator at black level
28
1
27
2
26
3
RED
25
4
+ -
A1
A2
24
gm
5
-3DB
=7OMHz:Typ)
23
GREEN
6
22
7
+ -
A2
A1
VIDEO AMPLIFIER FOR MONITOR
gm
21
8
KA2139
Device Package Operating Temperature
ORDERING INFORMATION
20
BLUE
9
+ -
A1
A2
19
10
28 DIP
gm
18
11
CONTRAST
CONTROL
28-DIP-600A
Vref
2.4V
17
12
-20 C ~ +70 C
13
16
1.4
V
15
14

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ka2139 Summary of contents

Page 1

... Built-in clamp gate circuit to operate the clamp comparator at black level Vref 2.4V bandgap circuit BLOCK DIAGRAM RED VIDEO AMPLIFIER FOR MONITOR =7OMHz:Typ) -3DB ORDERING INFORMATION Device Package Operating Temperature KA2139 28 DIP BLUE GREEN ...

Page 2

... KA2139 PIN DESCRIPTION No Symbol Description 1 V Power supply 1 CC1 2 CONCAP1 Contrast capacitor 1 3 CONCAP2 Contrast capacitor 2 4 RIN R channel input 5 RCAP R-CH comparator cap. 6 GIN G channel input 7 GND Ground 8 GCAP G-CH comparator cap. 9 BIN B channel input 10 BCAP B-CH comparator cap R,G,B amp. offset voltage ...

Page 3

... KA2139 ELECTRICAL CHARACTERISTICS (V = 12V unless otherwise specified Characteristics Supply Current R,G,B CH Output Voltage 1 R,G,B CH Output Voltage 2 Input Reference Voltage R,G,B Input Bias Current Clamp Gate Low Input Voltage Clamp Gate High Input Voltage Clamp Gate Low Input Current Clamp Gate High Input Current R,G,B Clamp CAP ...

Page 4

... KA2139 ELECTRICAL CHARACTERISTICS (V = 12V unless otherwise specified Characteristics Symbol R,G,B Amp. Distortion THD R,G,B Amp. Banwidth f-3dB R,G,B Amp. rising time Rtr, Gtr, Btr R Amp. Isolation1-100K AR1iso100K R Amp. Isolation2-100K AR2iso100K G Amp. Isolation1-100K AG1iso100K Measure the R output level G Amp. Isolation2-100K AG2iso100K Measure the B output level B Amp ...

Page 5

... F 0 12V 5 F RIN + 47 F 0.1 F VIDEO AMPLIFIER FOR MONITOR R G OUT OUT 10K 330 100 0.1 F 100 0 10K KA2139 0 0.1 F 0.1 F 0.1 F 0 10K 50 10K 50 BIN + 100 10K ...

Page 6

... OUT 330 + 0.01 F 100 200 0 INPUT VIDEO AMPLIFIER FOR MONITOR G OUT 330 330 100 200 100 KA2139 470K 470K + + + 470K 0.47 F 0. 10K 10K 10K 0 INPUT ...

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