LM2412T Datasheet

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LM2412 Monolithic Triple 2.8 ns CRT Driver

December 1999

LM2412

Monolithic Triple 2.8 ns CRT Driver

General Description

The LM2412 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 LM2412 is a low power alternative of

the LM2402

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

molded plastic power package. See thermal considerations

section for heat sinking requirements.

Lower power than LM2402 with the same bandwidth

Well matched with LM2202 video preamps

Output swing capability: 50 V

PP

for V

CC

= 80V

1V to 5V input range

Stable with 0-20 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 with 85 Hz refresh rate

n

Pixel clock frequency up to 200 MHz

Features

n

Rise/fall times typically 2.8 ns with 8 pF load at 40 V

PP

Schematic and Connection Diagrams

DS101298-1

DS101298-2

FIGURE 1. Simplified Schematic Diagram

(One Channel)

Top View

Order Number LM2412T

See NS package Number

漏 1999 National Semiconductor Corporation

DS101298

www.national.com

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