LM2450

OBSOLETE 15A§LM2450 www.ti.com SNOSAN6D – SEPTEMBER 2005 – REVISED APRIL 2013 LM2450 220V Monolithic Triple Channel 7 MHz DC Coupled CRT DTV Driver Check for Samples: 15A§LM2450 FEATURES 1 2 7 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 pF–20 pF Capacitive Loads and Inductive Peaking Networks Convenient TO-220 Staggered Thin Lead Package Style APPLICATIONS DC Coupled DTV Applications Using the 480p Format as well as Standard NTSC and PAL Formats. DESCRIPTION The LM2450 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-220 molded plastic power package designed specifically to meet high voltage spacing requirements. See THERMAL CONSIDERATIONS section. Connection Diagram VCC VBB CRT DRIVER CH 2 X 15 VOUT1 14 VOUT2 13 VOUT3 12 VCC 11 GND 10 GND 9 GND 8 IK 7 VBB 6 VDA...