LM1281 - 110 MHz RGB Video Amplifier System with On Screen Display (OSD) [Obsolete]
Datasheet Obsolete Versions Knowledge Base

Features
•Three wideband video amplifiers 85 MHz @ -3 dB (4 VPP output)
•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

 

General Description

The LM1281 is a full feature video amplifier with OSD inputs, all within a 28-pin package. More...


Applications

•High resolution RGB CRT monitors requiring OSD capability

Also Recommended

LM1282▲Functional Replacement

Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM1281 85 MHz RGB Video Amplifier System with On Screen Display (OSD) 391
Kbytes		 1-Jun-99 Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Obsolete Versions

Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
LM1281N
NONE
NONE
04 Mar 2003

General Description

The LM1281 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 1024 x 768. The video section of the LM1281 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 LM1281 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.

Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-1013: AN-1013 Video Amplifier Design for Computer Monitors 337
Kbytes		 4-Oct-04 Download

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[Information as of 8-Nov-2009]