LM2469 Monolothic Triple 9nS High Gain CRT Driver
October 2000
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.
n
0V to 3.75V input range
n
Stable with 0-20pF capacitive loads and inductive
peaking networks
n
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
Features
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Higher gain to match LM126X CMOS preamplifiers
Schematic Diagram
Connection Diagram
DS200006-2
Note: Tab is at GND.
DS200006-1
FIGURE 1. Simplified Schematic Diagram (One
Channel)
FIGURE 2. Top View
Order Number: LM2469TA
NS package Number: TA09A
© 2000 National Semiconductor Corporation
DS200006
www.national.com
NSC [ NATIONAL SEMICONDUCTOR ]
