LM2408 Monolithic Triple 4 5 ns CRT Driver
December 1996
LM2408 Monolithic Triple 4 5 ns CRT Driver
General Descriptio...
LM2408 Monolithic Triple 4 5 ns CRT Driver
December 1996
LM2408 Monolithic Triple 4 5 ns CRT Driver
General Description
The LM2408 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 The gain of each channel is internally set at b15 and can drive CRT capacitive loads as well as resistive loads presented by other applications limited only by the package’s power dissipation The IC is packaged in an industry standard 11-Lead TO-220 molded plastic power package See thermal considerations on page 5
Features
Y Y
Y Y Y Y
Rise fall times typically 4 5 ns with 8 pF load Output swing capability 50 VPP for VCC e 80 40 VPP for VCC e 70 30 VPP for VCC e 60 Pinout designed for easy PCB layout 1V to 7V input range Stable with 0 pF – 20 pF capactive loads Convenient TO-220 staggered lead package style
Applications
Y Y
CRT driver for 1280 c 1024 (Non-interfaced) and XGA display resolution color monitors Pixel clock frequency up to 160 MHz
Schematic and Connection Diagrams
TL H 12683 – 2
Note Tab is at GND
Top View
TL H 12683 – 1
FIGURE 1 Simplified Schematic Diagram (One Channel)
C1996 National Semiconductor Corporation
TL H 12683
RRD-B30M126 Printed in U S A
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Absolute Maximum Ratings
(Notes 1 and 3)
a 95V Supply
Voltage (VCC) a 16V Bias
Voltage (VBB) b 0 5V to VBIAS a 0 5V Input
Voltage (VIN) b 65 C ...