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LM1279A データシート(PDF) 2 Page - Texas Instruments |
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LM1279A データシート(HTML) 2 Page - Texas Instruments |
2 / 15 page LM1279A 110 MHz RGB Video Amplifier System with OSD General Description The LM1279A is a full featured and low cost video amplifier with OSD (On Screen Display). 8V operation for low power and increased reliability. Supplied in a 20-pin DIP package, accommodating very compact designs of the video channel requiring OSD. All video functions controlled by 0V to 4V high impedance DC inputs. This provides easy interfacing to 5V DACs used in computer controlled systems and digital alignment systems. Unique OSD switching, no OSD switch- ing signal required. An OSD signal at any OSD input typically switches the LM1279A to the OSD mode within 5 ns. Ideal video amplifier for the low cost OSD monitor with resolutions up to 1024 x 768. The LM1279A provides superior protection against ESD. Excellent alternative for the MC13282 in new designs. Features n Three wideband video amplifiers 110 MHz @ −3dB (4 V PP output) n OSD signal to any OSD input pin automatically switches all 3 outputs to the OSD mode n Fast OSD switching time, typically 5 ns n 3.5 kV ESD protection n Fixed cutoff level typically set to 1.2V n 0V to 4V, high impedance DC contrast control with over 40 dB range n 0V to 4V, high impedance DC drive control (0 dB to −12 dB range) n Matched (±0.1 dB or 1.2%) attenuators for contrast control n Output stage directly drives most hybrid or discrete CRT drivers Applications n High resolution RGB CRT monitors n Video AGC amplifiers n Wideband amplifiers with contrast and drive controls n Interface amplifiers for LCD or CCD systems Block and Connection Diagram DS101250-1 FIGURE 1. Order Number LM1279AN See NS Package Number N20A October 1999 © 1999 National Semiconductor Corporation DS101250 www.national.com |
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同様の説明 - LM1279A |
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