LM2418 Triple 30 MHz CRT Driver
January 1995
LM2418 Triple 30 MHz CRT Driver
General Description
The LM2418 contains three large signal voltage amplifiers
designed to directly drive CRT cathodes for VGA Color
Graphics Displays Output swings greater than 50 V
PP
are
achieved with a 90V power supply The nominal voltage
gain of each amplifier is
b
19 with gain matching of 1 0 dB
between amplifiers
Packaging is the industry standard molded 11 lead TO-220
The heatsink tab is isolated and may be grounded to im-
prove RFI shielding and simplify assembly
Features
Y
Y
Y
Y
Y
Y
Y
50 Vpp output at 30 MHz drives CRT directly
Rise fall time typically 12 ns with 8 pF load
65V output swing capability
Optimized output stage for low crossover distortion
Gain matching of 1 dB
Voltage gain of
b
19
Includes oscillation supression resistors
Applications
Y
Y
CRT driver for RGB monitors
High voltage amplifiers
Schematic and Connection Diagram
(One Section)
TL K 11125 鈥?1
TL K 11125 鈥?2
FIGURE 1
Top View
Order Number LM2418T
See NS Package Number TA11B
C
1995 National Semiconductor Corporation
TL K 11125
RRD-B30M115 Printed in U S A