LM2422 220V Monolithic Triple Channel 30 MHz CRT DTV Driver
January 2005
LM2422
220V Monolithic Triple Channel 30 MHz CRT DTV Driver
General Description
The LM2422 is a triple channel high voltage CRT driver
circuit designed for use in DTV 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 鈭?2 and can drive CRT capacitive
loads as well as resistive loads present in 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 designed specifically to meet
high voltage spacing requirements. See Thermal Consider-
ations section.
Features
30 MHz bandwidth
Greater than 130V
P-P
output swing capability
0V to 5V input voltage range
Stable with 0 pF鈥?0 pF capacitive loads and inductive
peaking networks
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Convenient TO-220 staggered thin lead package style
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Applications
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HDTV applications using the 1080i format as well as
other DTV and standard TV formats.
Connection Diagram
Schematic Diagram
20138201
FIGURE 1. Top View
Order Number LM2422
See NS Package Number TE11B
FIGURE 2. Simplified Schematic Diagram
(One Channel)
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漏 2005 National Semiconductor Corporation
DS201382
www.national.com