KA2139 데이터 시트보기 (PDF) - Samsung

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KA2139

VIDEO AMPLIFIER FOR MONITOR

Samsung 

KA2139

VIDEO AMPLIFIER FOR MONITOR

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.

28-DIP-600A

FUNCTIONS

• R. G. B amplifier

• Contrast control

• Clamp & brIghtness circuit

• Vref. circuit

FEATURES

• 3 Channel R.G.B video amplifier (f.-3DB=7OMHz:Typ)

• Superior linearity contrast control

• Black level clamp comparator for

ORDERING INFORMATION

brightness control

Device Package Operating Temperature

• Built-in clamp gate circuit to operate the

clamp comparator at black level

KA2139 28 DIP

-20°C ~ +70°C

• Vref 2.4V bandgap circuit

BLOCK DIAGRAM

28 27 26 25 24 23 22 21 20 19 18 17 16 15

A2

A2

A2

A1 gm

+-

RED

A1 gm

+-

GREEN

A1

+-

BLUE

gm

CONTRAST

CONTROL

1.4

Vref

V

2.4V

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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