LM2471 Monolithic Triple 4 ns High Swing CRT Driver
July 2004
LM2471
Monolithic Triple 4 ns High Swing CRT Driver
General Description
The LM2471 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 鈭?7 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. See Thermal Considerations
section for more information.
n
0V to 3.4V input range
n
Stable with 0鈥?0 pF capacitive loads and inductive
peaking networks
n
Convenient TO-220 staggered lead package style
n
Maintains standard LM24XX Family pinout which is
designed for easy PCB layout
Applications
n
1600 x 1200 displays up to 70 Hz refresh
n
Pixel clock frequencies up to 180 MHz
n
Monitors using video blanking
Features
n
Well-matched to the LM126X preamplifiers
n
Higher gain for high brightness applications
Schematic and Connection Diagrams
20103702
Note:
Tab is at GND
Top View
Order Number LM2471TA
20103701
FIGURE 1. Simplified Schematic Diagram
(One Channel)
漏 2004 National Semiconductor Corporation
DS201037
www.national.com