Ns Hight Gain Crt Driver - Mitsubishi DPLUS 74SB -BKA Service Manual

8. 9nS Hight Gain CRT Driver

LM2469
Monolothic Triple 9nS High Gain CRT Driver
Gerenral Description
The LM2469 is an integrated high voltage CRT driver circuit
designed for use in color monitor applications. The IC
contains three high input impedance wide band amplifiers,
which directly drive the RGB cathodes of a CRT. Each
channel has its gain internally set to –20 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 an industry standard 9 lead TO-220
molded plastic package.
Features
•
Higher gain to match LM126X CMOS preamplifiers
Schematic Diagram
• 0V to 3.75V input range
•
Stable with 0-20pF capacitive loads and inductive peaking
networks
• Maintains standard LM243X Family Pinout which is
designed for easy PCB layout
•
Convenient TO-220 staggered lead package style
Applications
• Up to 1024 x 768 at 70Hz
•
Pixel clock frequencies up to 75MHz
Monitors using video blanking
Schematic Diagram
7-43