LM2403 Datasheet

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LM2403 Monolithic Triple 4.5 nS CRT Driver

August 1999

LM2403

Monolithic Triple 4.5 nS CRT Driver

General Description

The LM2403 is an integrated high voltage CRT driver circuit

designed for use in high resolution color monitor applica-

tions. The IC contains three high input impedance, wide

band amplifiers which directly drive the RGB cathodes of a

CRT. Each channel has its gain internally set to 鈭?4 and can

drive CRT capacitive loads as well as resistive loads pre-

sented by other applications, limited only by the package鈥檚

power dissipation.

The IC is packaged in an industry standard 11 lead TO-220

molded plastic power package. See thermal considerations

on page 5.

Features

Rise/fall times typically 4.5 nS with 8 pF load at 40 V

pp

Well matched with LM1283 video preamp

Output swing capability: 60 V

pp

for V

CC

= 80V

1V to 5V input range

Stable with 0 pF鈥?0 pF capacitive loads and inductive

peaking networks

n

Convenient TO-220 staggered lead package style

n

Standard LM240X Family Pinout which is designed for

easy PCB layout

n

n

n

n

n

Applications

n

CRT driver for color monitors with display resolutions up

to 1600 x 1200

n

Pixel clock frequency up to 160 MHz

Schematic and Connection Diagrams

DS100082-1

DS100082-2

Top View

Order Number LM2403T

FIGURE 1. Simplified Schematic Diagram (One Channel)

漏 1999 National Semiconductor Corporation

DS100082

www.national.com

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