LM2468TA/NOPB National Semiconductor, LM2468TA/NOPB Datasheet

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LM2468TA/NOPB

Manufacturer Part Number
LM2468TA/NOPB
Description
IC CRT DVR TRIPLE 14NS TO220-9
Manufacturer
National Semiconductor
Datasheet

Specifications of LM2468TA/NOPB

Display Type
CRT
Current - Supply
18mA
Voltage - Supply
60 V ~ 85 V
Operating Temperature
-20°C ~ 115°C
Mounting Type
Through Hole
Package / Case
TO-220-9 (Bent and Staggered Leads)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Interface
-
Configuration
-
Digits Or Characters
-
Other names
*LM2468TA
*LM2468TA/NOPB
LM2468TA
LM2468TANOPB
LM2468TANOPB
© 2000 National Semiconductor Corporation
LM2468
Monolothic Triple 14nS High Gain CRT Driver
General Description
The LM2468 is an integrated high voltage CRT driver circuit
designed for use in color monitor applications. The IC con-
tains 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
n Higher gain to accommodate CMOS preamplifiers
Schematic Diagram
FIGURE 1. Simplified Schematic Diagram (One
Channel)
DS200135
DS200135-1
n 0V to 3.75V input range
n Stable with 0-20pF capacitive loads and inductive
n Matched to the LM126X series preamplifier and
n Maintains standard LM243X Family Pinout which is
n Convenient TO-220 staggered 9 lead package style
Applications
n Up to 1024 X 768 at 60 Hz (or 800 X 600 at 72/75 Hz)
n Pixel clock frequencies up to 50 MHz
n Monitors using video blanking
Connection Diagram
peaking networks
LM2479/2480 bias clamp
designed for easy PCB layout
Note: Tab is at GND.
NS package Number: TA09A
Order Number: LM2468TA
FIGURE 2. Top View
DS200135-2
December 2000
www.national.com

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LM2468TA/NOPB Summary of contents

Page 1

... Features n Higher gain to accommodate CMOS preamplifiers Schematic Diagram FIGURE 1. Simplified Schematic Diagram (One Channel) © 2000 National Semiconductor Corporation 3.75V input range n Stable with 0-20pF capacitive loads and inductive peaking networks n Matched to the LM126X series preamplifier and LM2479/2480 bias clamp ...

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, 10sec.) ESD Tolerance, Human Body Model Electrical Characteristics ...

Page 3

Typical Performance Characteristics 65V), Test Circuit - Figure 3 unless otherwise specified. FIGURE out FIGURE 5. Power Dissipation vs Frequency FIGURE 6. Speed vs Temperature (V = +80V , DS200135-4 in FIGURE 8. ...

Page 4

... The input signal from the generator is AC coupled to the base of Q5. APPLICATION HINTS INTRODUCTION National Semiconductor (NSC) is committed to provide ap- plication information that assists our customers in obtaining the best performance possible from our products. The fol- lowing information is provided in order to support this com- mitment ...

Page 5

APPLICATION HINTS (Continued) resistors for R1 will simplify finding the values needed for optimum performance in a given application. Once the opti- mum value is determined, the variable resistors can be replaced with fixed values. Effect of Load Capacitance Figure ...

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APPLICATION HINTS www.national.com (Continued) 6 ...

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APPLICATION HINTS (Continued) 7 www.national.com ...

Page 8

APPLICATION HINTS www.national.com (Continued) FIGURE 13. NSC LM126X/246X Demo Board Layout 8 DS200135-17 ...

Page 9

... 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 ...

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