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LM1281N データシート

部品番号コンポーネント説明メーカー
LM1281N 85 MHz RGB Video Amplifier System with On Screen Display (OSD) National-Semiconductor
National ->Texas Instruments National-Semiconductor
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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.

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

Applications
■ High resolution RGB CRT monitors requiring OSD capability

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