www.DataSheet4U.com
December 2005
LM2451 220V Monolithic Triple Channel 12 MHz DC Coupled CRT DTV Driver
LM2451 220V M...
www.DataSheet4U.com
December 2005
LM2451 220V Monolithic Triple Channel 12 MHz DC Coupled CRT DTV Driver
LM2451 220V Monolithic Triple Channel 12 MHz DC Coupled CRT DTV Driver
General Description
The LM2451 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
amplifiers 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. Normally the DC input
voltage is from a DAC. Each channel has its gain internally set to −54 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 a 15-lead TO-247 molded plastic power package designed specifically to meet high
voltage spacing requirements. See Thermal Considerations section.
Features
12 MHz bandwidth at 130VP-P 100V black level adjustment range using 0V to 5V input Current output for IK feedback systems Greater than 130VP-P output swing capability 0V to 5V input
voltage range Stable with 0 pF–20 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 DTV applications using the 480p format as well as standard NTSC and PAL formats.
Connection Diagram
Schematic Diagram
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FIGURE 1. Top View Order Number LM2451TB See N...