LM2451 Datasheet | National Semiconductor

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 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 DTV applications using the 480p format as well as standard NTSC and PAL formats. Connection Diagram Schematic Diagram 20144401 20144402 FIGURE 1. Top View Order Number LM2451TB See NS Package Number TB15A FIGURE 2. Simplified Schematic Diagram (One Channel) © 2005 National Semiconductor Corporation DS201444 .national. .. Absolute Maximum Ratings 3) (Notes 1, Junction Temperature θJC (typ) 150˚C 4.0˚C/W 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 2 k V 200V 300˚C +250V +16V - 0.5V to VBB +0.5V - 65˚C to +150˚C Operating Ratings (Note 2) VCC VBB VIN...