LM1281N 85MHz RGB Video Amplifier System with On Screen Display (OSD) DIP-28

Description

LM1281N 85MHz RGB Video Amplifier System with On Screen Display (OSD) DIP-28 The LM1281N 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 LM1281N also features an internal spot-killer circuit to protect the CRT when the monitor is turned off. 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 Specifications: Applications General Purpose Mounting Type Through Hole -3db Bandwidth 85 MHz Package / Case 28-DIP (0.600″, 15.24mm) Current – Supply 95 mA Number Of Circuits 3 Supplier Device Package 28-DIP Current – Output / Channel 28 mA Voltage – Supply, Single/Dual (±) 11.4V ~ 12.6V Applications: Video signal amplification in CRT monitors. On-screen display integration in color displays. High-resolution monitor designs up to 1024×768. Repair and maintenance of legacy video equipment. Custom video processing systems requiring analog controls. Package Include: 1x LM1281N 85MHz RGB Video Amplifier System with On Screen Display (OSD) DIP-28 Datasheet: LM1281

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