LM2202N National Semiconductor, LM2202N Datasheet

IC VIDEO AMP SYSTEM 20-DIP

LM2202N

Manufacturer Part Number
LM2202N
Description
IC VIDEO AMP SYSTEM 20-DIP
Manufacturer
National Semiconductor
Datasheet

Specifications of LM2202N

Applications
General Purpose
Number Of Circuits
1
-3db Bandwidth
230MHz
Current - Supply
48mA
Current - Output / Channel
28mA
Voltage - Supply, Single/dual (±)
8 V ~ 13.2 V
Mounting Type
Through Hole
Package / Case
20-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
*LM2202N

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM2202N
Manufacturer:
NS/国半
Quantity:
20 000
© 1999 National Semiconductor Corporation
LM2202
230 MHz Video Amplifier System
General Description
The LM2202 is a very high frequency video amplifier system
intended for use in high resolution monochrome or RGB
color monitor applications. In addition to the wideband video
amplifier the LM2202 contains a gated differential input black
level clamp comparator for brightness control, a DC con-
trolled attenuator for contrast control and a DC controlled
sub contrast attenuator for drive control. The DC control for
the contrast attenuator is pinned out separately to provide a
more accurate control system for RGB color monitor applica-
tions. All DC controls offer a high input impedance and oper-
ate over a 0V to 4V range for easy interface to bus controlled
alignment systems. The LM2202 operates from a nominal
12V supply but can be operated with supply voltages down
to 8V for applications that require reduced IC package power
dissipation characteristics.
Features
n Wideband video amplifier
Block and Connection Diagram
(f
−3dB
= 230 MHz at V
O
= 4 V
PP
)
DS012591
See NS Package Number N20A or M20B
Order Number LM2202N or LM2202M
n t
n Externally gated comparator for brightness control
n 0V to 4V high input impedance DC contrast control
n 0V to 4V high input impedance DC drive control
n Easy to parallel three LM2202s for optimum color
n Output stage clamps to 0.65V and provides up to 9V
n Output stage directly drives most hybrid or discrete CRT
n Replacement for the LM1202
Applications
n High resolution CRT monitors
n Video switches
n Video AGC amplifier
n Wideband amplifier with gain and DC offset control
tracking in RGB systems
output voltage swing
amplifier stages
(
(
r
>
±
, t
3 dB range)
40 dB range)
f
= 1.5 ns at V
O
= 4 V
PP
www.national.com
April 1999
DS012591-1

Related parts for LM2202N

LM2202N Summary of contents

Page 1

... Output stage directly drives most hybrid or discrete CRT amplifier stages n Replacement for the LM1202 Applications n High resolution CRT monitors n Video switches n Video AGC amplifier n Wideband amplifier with gain and DC offset control Order Number LM2202N or LM2202M See NS Package Number N20A or M20B April 1999 = DS012591-1 www.national.com ...

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 V Pins Ground Pins 5, 13, 15 Voltage at Any Input Pin ( Video Output Current ( Package Power Dissipation at = 25˚ (Above 25˚C Derate Based ...

Page 3

Test Circuit FIGURE 1. LM2202 Test Circuit 3 DS012591-2 www.national.com ...

Page 4

Typical Performance Characteristics Quiescent Supply Current vs Supply Voltage Contrast vs Frequency Attenuation vs Contrast Voltage Circuit Description Figure 2 shows a block diagram of the LM2202 video ampli- fier along with contrast and brightness (black level) control. Contrast control ...

Page 5

Circuit Description (Continued) provides gain adjustment range. This feature is nec- essary for RGB applications where independent gain adjust- ment of each channel is required. The brightness or black level clamping requires a “sample and hold” circuit ...

Page 6

Circuit Description (Continued) FIGURE 3. Simplified Schematic of the LM2202 Video Amplifier Input Stage VIDEO AMPLIFIER SECTION (Output Stage) A simplified schematic of LM2202’s video amplifier output stage is shown in Figure 4 . The output stage is the second ...

Page 7

Circuit Description (Continued) FIGURE 4. Simplified Schematic of LM2202 Video Amplifier Output Stage DS012591-10 7 www.national.com ...

Page 8

Circuit Description (Continued) www.national.com 8 ...

Page 9

Circuit Description (Continued) DRIVE CONTROL SECTION A simplified schematic of the LM2202’s drive control section is shown in Figure voltage is applied at the drive control input (pin 9). Transistors Q49, Q50 and ...

Page 10

Circuit Description (Continued) www.national.com 10 ...

Page 11

Circuit Description (Continued) FIGURE 7. Simplified Schematic of the LM2202 Clamp Gate Circuit 11 DS012591-13 www.national.com ...

Page 12

Circuit Description (Continued) FIGURE 8. Simplified Schematic of the LM2202 Clamp Comparator Circuit Applications SINGLE VIDEO CHANNEL A typical application for a single video channel is shown in Figure 9 . The video signal is AC coupled to pin 6. ...

Page 13

Applications (Continued) FIGURE 9. Typical LM2202 Application (Single Video Channel) 13 DS012591-15 www.national.com ...

Page 14

Applications (Continued) FIGURE 10. Typical RGB Application with Contrast, Drive and Black Level (Cutoff) Control www.national.com DS012591-16 14 ...

Page 15

Power Down Characteristics The LM2202 includes a built-in power down spot killer to pre- vent a flash on the screen upon power down. The LM2202’s output voltage decreases as the device is being powered down, thus preventing a flash on ...

Page 16

... Physical Dimensions inches (millimeters) unless otherwise noted www.national.com Order Number LM2202M NS Package Number M20B Order Number LM2202N NS Package Number N20A 16 ...

Page 17

... 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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