TLH9178

January 1996

LM1203 RGB Video Amplifier System

General Description

The LM1203 is a wideband video amplifier system intended

for high resolution RGB color monitor applications In addi-

tion to three matched video amplifiers the LM1203 contains

three gated differential input black level clamp comparators

for brightness control and three matched attenuator circuits

for contrast control Each video amplifier contains a gain set

to 10) as well as providing trim capability The LM1203 also

contains a voltage reference for the video inputs For high

resolution monochrome monitor applications see the

LM1201 Video Amplifier System datasheet

Features

Y

Three wideband video amplifiers (70 MHz

b

3dB)

Y

contrast control

Y

Three externally gated comparators for brightness con-

trol

Y

Provisions for independent gain control (Drive) of each

video amplifier

Y

Video input voltage reference

Y

Low impedance output driver

Block and Connection Diagram

TLH9178 – 1

FIGURE 1

Order Number LM1203N

See NS Package Number NA28F

C1996 National Semiconductor Corporation

RRD-B30M56Printed in U S A