LM2469

Monolothic Triple 9nS High Gain CRT Driver

General Description

The LM2469 is an integrated high voltage CRT driver circuit

designed for use in color monitor applications. The IC con-

tains three high input impedance wide band amplifiers,

which directly drive the RGB cathodes of a CRT. Each

channel has its gain internally set to -20 and can drive CRT

capacitive loads as well as resistive loads present in other

applications, limited only by the package’s power dissipation.

The IC is packaged in an industry standard 9 lead TO-220

molded plastic package.

Features

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Higher gain to match LM126X CMOS preamplifiers

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0V to 3.75V input range

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Stable with 0-20pF capacitive loads and inductive

peaking networks

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Maintains standard LM243X Family Pinout which is

designed for easy PCB layout

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Convenient TO-220 staggered 9 lead package style

Applications

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Up to 1024 X 768 at 70Hz

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Pixel clock frequencies up to 75MHz

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Monitors using video blanking

Schematic Diagram

Connection Diagram

DS200006-1

FIGURE 1. Simplified Schematic Diagram (One

Channel)

DS200006-2

Note: Tab is at GND.

FIGURE 2. Top View

Order Number: LM2469TA

NS package Number: TA09A

October 2000

© 2000 National Semiconductor Corporation

DS200006

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