LM2405T National Semiconductor, LM2405T Datasheet

IC DRIVER MONOLITHIC TO-220-11

LM2405T

Manufacturer Part Number
LM2405T
Description
IC DRIVER MONOLITHIC TO-220-11
Manufacturer
National Semiconductor
Datasheet

Specifications of LM2405T

Display Type
CRT
Current - Supply
18mA
Voltage - Supply
60 V ~ 85 V
Operating Temperature
-20°C ~ 100°C
Mounting Type
Through Hole
Package / Case
TO-220-11 (Bent and Staggered Leads)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Interface
-
Configuration
-
Digits Or Characters
-
Other names
*LM2405T

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© 1999 National Semiconductor Corporation
LM2405
Monolithic Triple 7 ns CRT Driver
General Description
The LM2405 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 chan-
nel has its gain internally set at −14 and can drive CRT ca-
pacitive 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
n Rise/fall times typically 7 ns with 8 pF load
Schematic and Connection Diagram
FIGURE 1. Simplified Schematic Diagram (One
Channel)
DS012682
DS012682-1
n Output swing capability:
n Pinout designed for easy PCB layout
n 0V to 6V input range
n Stable with 0 pF–20 pF capactive loads
n Convenient TO-220 staggered lead package style
Applications
n CRT driver for 1280 x 1024 (Non-interlaced) and XGA
n Pixel clock frequency up to 130 MHz
n Monitors using video blanking
Tab is at GND
display resolution color monitors
50 V
40 V
30 V
PP
PP
PP
for V
for V
for V
Order Number LM2405T
CC
CC
CC
= 80
= 70
= 60
Top View
DS012682-2
www.national.com
August 1999

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LM2405T Summary of contents

Page 1

... Convenient TO-220 staggered lead package style Applications n CRT driver for 1280 x 1024 (Non-interlaced) and XGA display resolution color monitors n Pixel clock frequency up to 130 MHz n Monitors using video blanking Tab is at GND Top View Order Number LM2405T DS012682-1 August 1999 DS012682-2 www.national.com ...

Page 2

Absolute Maximum Ratings Supply Voltage ( Bias Voltage ( Input Voltage (V ) −0. Storage Temperature Range (T ) STG Lead Temperature < (Soldering, 10 sec.) ESD Tolerance Electrical Characteristics = +80V, V ...

Page 3

... CC AC coupled to the base of Q5. Application Hints INTRODUCTION National Semiconductor is committed to providing applica- tion information that assists our customers in obtaining 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 optimization of perfor- mance was done using a specific printed circuit board de- signed at National ...

Page 4

Application Hints (Continued) the supply pin as is practical (preferably less than the supply pin). Additionally µF to 100 µF electrolytic capacitor should be connected from the supply pin to ground. The electrolytic capacitor should also be placed ...

Page 5

... The following references are recommended: Ott, Henry W., “Noise Reduction Techniques in Electronic Systems”, John Wiley and Sons, New York, 1976. “Guide to CRT Video Design”, National Semiconductor Appli- cation Note 861. “Video Amplifier Design for Computer Monitors”, National Semiconductor Application Note 1013. ...

Page 6

Application Hints (Continued) www.national.com 6 ...

Page 7

... National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. LM2405 11-Lead Molded TO-220 NS Package Number TA11B Order Number LM2405T 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system affect its safety or effectiveness ...

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