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National Semiconductor - Monolithic Triple 9.5 ns CRT Driver

Numéro de référence LM2439T
Description Monolithic Triple 9.5 ns CRT Driver
Fabricant National Semiconductor 
Logo National Semiconductor 





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LM2439T fiche technique
August 1999
LM2439
Monolithic Triple 9.5 ns CRT Driver
General Description
The LM2439 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 chan-
nel has its gain internally set to −14 and can drive CRT ca-
pacitive loads as well as resistive loads present in other ap-
plications, limited only by the package’s power dissipation.
The IC is packaged in an industry standard 9-lead TO-220
molded plastic power package. See Thermal Considerations
section.
Features
n Dissipates approximately 50% less power than the
LM2406
n Well matched with LM1279 video preamp
n 0V to 5V input range
n Stable with 0 pF–20 pF capacitive loads and inductive
peaking networks
n Convenient TO-220 staggered lead package style
n Standard LM243X Family Pinout which is designed for
easy PCB layout
Applications
n 1024 x 768 Displays up to 70 Hz Refresh
n Pixel clock frequencies up to 75 MHz
n Monitors using video blanking
Schematic and Connection Diagrams
DS100988-1
FIGURE 1. Simplified Schematic Diagram
(One Channel)
DS100988-2
Note: Tab is at GND
Top View
Order Number LM2439T
© 1999 National Semiconductor Corporation DS100988
www.national.com

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