LM2452
LM2452 is 220V Monolithic Triple Channel 17 MHz DC Coupled CRT DTV Driver manufactured by National Semiconductor.
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 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
17 MHz bandwidth 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 p F- 20 p F 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
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FIGURE 1. Top View Order Number LM2452TB See NS Package Number TB15A
FIGURE 2. Simplified Schematic Diagram (One Channel)
© 2005 National Semiconductor Corporation
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Absolute Maximum Ratings
3)
(Notes 1,
Operating Ratings (Note 2)
VCC VBB VIN VOUT Case Temperature (15W max power) +100V to +230V +7V to +13V +0V to +5V +40V to +215V 100˚C
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (VCC) Bias Voltage (VBB) Input Voltage (VIN) Storage Temperature Range (TSTG) Lead Temperature (Soldering, < 10 sec.) ESD Tolerance, Human Body Model Machine Model Junction Temperature θJC...
