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LM2438N/a5avaiMonolithic Triple 13.5 ns CRT Driver


LM2438 ,Monolithic Triple 13.5 ns CRT DriverElectrical Characteristics(See Figure 2 for Test Circuit)Unless otherwise noted: V = +80V, V = +12V ..
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LM2438
Monolithic Triple 13.5 ns CRT Driver
LM2438
Monolithic Triple 13.5 ns CRT Driver
General Description

The LM2438isan integrated high voltage CRT driver circuit
designedforusein color monitor applications.TheIC con-
tains three high input impedance, wide band amplifiers
which directly drivethe RGB cathodesof aCRT. Each chan-
nelhasits gain internallysetto −14andcan drive CRTca-
pacitive loadsas wellas resistive loads presentin otherap-
plications, limited onlybythe package’s power dissipation.
TheICis packagedinan industry standard 9-lead TO-220
molded plastic power package.See Thermal Considerations
section.
Features
Well matched with LM1279 video preamp0Vto5V input range Stable with 0–20pF capacitive loadsand inductive
peaking networks Convenient TO-220 staggered lead package style Standard LM243X Family Pinout whichis designedfor
easy PCB layout
Applications
1024x768 displaysupto60Hz refresh Pixel clock frequenciesupto60 MHz Monitors using video blanking
Schematic and Connection Diagrams

DS101043-1
FIGURE1. Simplified Schematic Diagram
(One Channel)

DS101043-2
Note:
TabisatGND
Top View
Order Number LM2438T

August 1999
LM2438
Monolithic
riple
CRT
Driver

©1999 National Semiconductor Corporation DS101043
ic,good price


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