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LM1282

National Semiconductor
Part Number LM1282
Manufacturer National Semiconductor
Description 110MHz RGB Video Amplifier
Published Mar 22, 2005
Detailed Description LM1282 110MHz RGB Video Amplifier System with On Screen Display (OSD) June 1998 LM1282 110 MHz RGB Video Amplifier Sys...
Datasheet PDF File LM1282 PDF File

LM1282
LM1282

Overview
LM1282 110MHz RGB Video Amplifier System with On Screen Display (OSD) June 1998 LM1282 110 MHz RGB Video Amplifier System with On Screen Display (OSD) General Description The LM1282 is a full feature video amplifier with OSD inputs, all within a 28-pin package.
This part is intended for use in monitors with resolutions up to 1280 x 1024.
The video section of the LM1282 features three matched video amplifiers with blanking.
All of the video amplifier adjustments feature high input impedance 0V to 4V DC controls, providing easy interfacing to bus controlled alignment systems.
The OSD section features three TTL inputs and a DC contrast control.
The switching between the OSD and video section is controlled by a single TTL input.
Although the OSD signals are TTL inputs, these signals are internally processed to match the OSD logic low level to the video black level.
When adjusting the drive controls for color balance of the video signal, the color balance of the OSD display will track these color adjustments.
The LM1282 also features an internal spot killer circuit to protect the CRT when the monitor is turned off.
For applications without OSD insertion please refer to the LM1205 or LM1208 data sheets.
n n n n n n n n n TTL OSD inputs, 50 MHz bandwidth On chip blanking, outputs under 0.
1 V when blanked High speed Video/OSD switch Independent drive control for each channel for color balance 0V to 4V, high impedance DC contrast control with over 40 dB range 0V to 4V, high impedance DC drive control (0 dB to −12 dB range) 0V to 4V, high impedance DC OSD contrast control with over 40 dB range Capable of 7 VPP output swing (slight reduction in bandwidth) Output stage directly drives most hybrid or discrete CRT drivers Applications n High resolution RGB CRT monitors requiring OSD capability Features n Three wideband video amplifiers 110 MHz @ −3 dB (4 VPP output) Block and Connection Diagram DS012519-1 FIGURE 1.
Order Number LM1282N See NS Package Number N28B © 1998 Na...


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