LM2465

Monolithic Triple 5.5 ns High Gain CRT Driver

General Description

The LM2465 is an integrated high voltage CRT driver circuit

designed for use in color monitor applications. 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 −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 0–20 pF capacitive loads and inductive

peaking networks

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Same pinout as LM2467/8/9, maintaining the standard

LM243X Family pinout for easy PCB layout

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Convenient TO-220 staggered lead package style

Applications

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Up to 1280 x 1024 at 75Hz

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Pixel clock frequencies up to 135 MHz

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Monitors using video blanking

Schematic and Connection Diagrams

DS200190-1

FIGURE 1. Simplified Schematic Diagram

(One Channel)

DS200190-2

Note: TabisatGND

Top View

Order Number LM2465TA

March 2001

© 2001 National Semiconductor Corporation

DS200190

www.national.com