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LM2452 Datasheet

  • LM2452

  • National Semiconductor [220V Monolithic Triple Channel 17 M...

  • NSC

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LM2452 220V Monolithic Triple Channel 17 MHz DC Coupled CRT DTV Driver
December 2005
LM2452
220V Monolithic Triple Channel 17 MHz DC Coupled CRT
DTV Driver
General Description
The LM2452 is a triple channel high voltage DC coupled
CRT driver circuit designed for use in DTV applications. The
IC contains three high input impedance, wide band amplifi-
ers which directly drive the RGB cathodes of a CRT. Each
amplifier has a summing input where the DC level of the
output is controlled by a low voltage DC input voltage. Nor-
mally the DC input voltage is from a DAC. Each channel has
its gain internally set to 鈭?4 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 a 15-lead TO-247 molded plastic
power package designed specifically to meet high voltage
spacing requirements. See Thermal Considerations section.
Features
17 MHz bandwidth
100V black level adjustment range using 0V to 5V input
Current output for IK feedback systems
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
n
Convenient TO-247 staggered thin lead package style
n
n
n
n
n
n
Applications
n
DC coupled HDTV applications using the 1080i format
as well as standard NTSC and PAL formats.
Connection Diagram
Schematic Diagram
20144501
20144502
FIGURE 1. Top View
Order Number LM2452TB
See NS Package Number TB15A
FIGURE 2. Simplified Schematic Diagram
(One Channel)
漏 2005 National Semiconductor Corporation
DS201445
www.national.com

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