IC DRIVER MONOLITHIC TO-220-11

LM2412T/NOPB

Manufacturer Part NumberLM2412T/NOPB
DescriptionIC DRIVER MONOLITHIC TO-220-11
ManufacturerNational Semiconductor
LM2412T/NOPB datasheet
 


Specifications of LM2412T/NOPB

Display TypeCRTCurrent - Supply21mA
Voltage - Supply60 V ~ 85 VOperating Temperature-20°C ~ 100°C
Mounting TypeThrough HolePackage / CaseTO-220-11 (Bent and Staggered Leads)
Lead Free Status / RoHS StatusLead free / RoHS CompliantInterface-
Configuration-Digits Or Characters-
Other names*LM2412T
*LM2412T/NOPB
LM2412T
  
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LM2412
Monolithic Triple 2.8 ns CRT Driver
General Description
The LM2412 is an integrated high voltage CRT driver circuit
designed for use in high resolution color monitor applica-
tions. 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 −14 and can
drive CRT capacitive loads as well as resistive loads pre-
sented by other applications, limited only by the package’s
power dissipation. The LM2412 is a low power alternative of
the LM2402
The IC is packaged in an industry standard 11 lead TO-220
molded plastic power package. See thermal considerations
section for heat sinking requirements.
Features
n Rise/fall times typically 2.8 ns with 8 pF load at 40 V
Schematic and Connection Diagrams
FIGURE 1. Simplified Schematic Diagram
(One Channel)
© 2001 National Semiconductor Corporation
n Lower power than LM2402 with the same bandwidth
n Well matched with LM2202 video preamps
n Output swing capability: 50 V
n 1V to 5V input range
n Stable with 0-20 pF capacitive loads and inductive
peaking networks
n Convenient TO-220 staggered lead package style
n Standard LM240X family pinout which is designed for
easy PCB layout
Applications
n CRT driver for color monitors with display resolutions up
to 1600 x 1200 with 85 Hz refresh rate
n Pixel clock frequency up to 200 MHz
PP
DS101298-1
DS101298
December 1999
for V
= 80V
PP
CC
DS101298-2
Top View
Order Number LM2412T
See NS package Number
www.national.com

LM2412T/NOPB Summary of contents

  • Page 1

    ... Rise/fall times typically 2.8 ns with 8 pF load Schematic and Connection Diagrams FIGURE 1. Simplified Schematic Diagram (One Channel) © 2001 National Semiconductor Corporation n Lower power than LM2402 with the same bandwidth n Well matched with LM2202 video preamps n Output swing capability input range ...

  • Page 2

    ... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Bias Voltage Input Voltage Storage Temperature Range, T STG < Lead Temperature (Soldering, 10 sec.) Electrical Characteristics (See Figure 2 for Test Circuit) ...

  • Page 3

    Typical Performance Characteristics FIGURE OUT FIGURE 4. Speed vs Temp. FIGURE 5. Rise/Fall Time DS101298-4 FIGURE 6. Power Dissipation vs Frequency DS101298-6 DS101298-8 3 DS101298-5 DS101298-7 FIGURE 7. Speed vs Offset DS101298-9 FIGURE 8. Bandwidth ...

  • Page 4

    ... AC coupled to the input of the CRT driver. Application Hints INTRODUCTION National Semiconductor (NSC) is committed to providing application information that assists our customers in obtain- ing the best performance possible from our products. The following information is provided in order to support this commitment. The reader should be aware that the optimiza- tion of performance was done using a specific printed circuit board designed at NSC ...

  • Page 5

    ... Ott, Henry W., “Noise Reduction Techniques in Electronic Systems”, John Wiley & Sons, New York, 1976. “Guide to CRT Video Design”, National Semiconductor Ap- plication Note 861. “Video Amplifier Design for Computer Monitors”, National Semiconductor Application Note 1013. ...

  • Page 6

    Application Hints (Continued) good example of a layout that can be used as a guide for future layouts. Note the location of the following compo- nents: • C47 - V bypass capacitor, located very close to pin 6 CC and ...

  • Page 7

    Application Hints (Continued) 7 www.national.com ...

  • Page 8

    Application Hints (Continued) www.national.com FIGURE 11. PCB Top Layer 8 DS101298-13 ...

  • Page 9

    Application Hints (Continued) FIGURE 12. PCB Bottom Layer 9 DS101298-14 www.national.com ...

  • Page 10

    Application Hints (Continued) www.national.com FIGURE 13. PCB CRT Driver, Blue Channel Output DS101298-16 FIGURE 14. I and DS101298-15 IN ...

  • Page 11

    ... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...