Datasheet > LM1212

LM1212

更新时间： 2024-09-15 04:20:15

品牌	Logo	应用领域
美国国家半导体 - NSC		视频放大器
页数	文件大小	规格书
18页	289K
描述
230 MHz Video Amplifier System with OSD Blanking

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LM1212 数据手册

August 1996

LM1212

230 MHz Video Amplifier System with OSD Blanking

Externally gated comparator for brightness control

0V to 4V high input impedance DC contrast control

General Description

The LM1212 is a very high frequency video amplifier system

intended for use in high resolution monochrome or RGB

color monitor applications with OSD. In addition to the wide-

band video amplifier the LM1212 contains a gated differen-

tial input black level clamp comparator for brightness con-

trol, a DC controlled attenuator for contrast control and a

DC controlled sub contrast attenuator for drive control. The

DC control for the contrast attenuator is pinned out sepa-

rately to provide a more accurate control system for RGB

color monitor applications. All DC controls offer a high input

impedance and operate over a 0V–4V range for easy inter-

face to bus controlled alignment systems. During the OSD

(

40 dB range)

0V to 4V high input impedance DC drive control

Ouput blanked to

(

3 dB range)

0.4V for OSD window

Easy to parallel three LM1212s for optimum color

tracking in RGB systems

Output stage clamps to 0.65V and provides up to 9V

output voltage swing

Output stage directly drives most hybrid or discrete

CRT amplifier stages

window, the output is blanked to 0.4V. The LM1212 oper-

Applications

ates from a nominal 12V supply but can be operated with

supply voltages down to 8V for applications that require re-

duced IC package power dissipation characteristics.

High resolution CRT monitors with OSD

Video switches

Video AGC amplifier

Wideband amplifier with gain and DC offset control

Features

Wideband video amplifier

1.5 ns at V

4 V

230 MHz at V

)

t , t

3 dB

4 V

Block and Connection Diagram

TL/H/12354–1

Order Number LM1212N

See NS Package Number N20A

1996 National Semiconductor Corporation

TL/H/12354

RRD-B30M86/Printed in U. S. A.

http://www.national.com

12 3 4 5 6 7...18

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LM1212N	NSC	获取价格	230 MHz Video Amplifier System with OSD Blanking
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