LM1282N National Semiconductor, LM1282N Datasheet
LM1282N
Specifications of LM1282N
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LM1282N Summary of contents
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... Capable output swing (slight reduction in PP bandwidth) n Output stage directly drives most hybrid or discrete CRT drivers Applications n High resolution RGB CRT monitors requiring OSD capability @ −3 dB FIGURE 1. Order Number LM1282N See NS Package Number N28B June 1998 DS012519-1 www.national.com ...
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... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Pins 6, 9, and 22 Peak Video Output Source Current (Any One Amp) Pins 18, 20, and 23 Voltage at Any Input Pin ( Power Dissipation (P ...
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AC Electrical Characteristics = 25˚C, V See AC Test Circuit ( Figure for the AC test unless otherwise stated Symbol Parameter A Video Amplifier Gain V max @ A Contrast Attenuation 2V V ...
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OSD Electrical Characteristics = 25˚C; V See DC Test Circuit ( Figure unless otherwise stated 0V Symbol Parameter V 10 kHz Video Feedthrough into OSD feed V 10 MHz Video Feedthrough into ...
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Typical Performance Characteristics LM1282 Crosstalk vs Frequency LM1282 Contrast vs Frequency LM1282 Drive vs Frequency = 12V 25˚C unless otherwise specified (Continued DS012519-4 DS012519-5 DS012519-6 5 www.national.com ...
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Timing Diagrams Blanking Propagation Delay and Rise/Fall Time Video to OSD, OSD to Video Propagation Delay and Switching Time www.national.com FIGURE 2. FIGURE 3. 6 DS012519-7 DS012519-8 ...
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Timing Diagrams (Continued) OSD Propagation Delay and Rise/Fall Times Test Circuits FIGURE 5. LM1282 OSD Video Preamp DC Test Circuit DS012519-9 FIGURE 4. 7 DS012519-10 www.national.com ...
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Test Circuits (Continued) FIGURE 6. LM1282 OSD Video Preamp AC Test Circuit www.national.com 8 DS012519-11 ...
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Test Circuits (Continued) FIGURE 7. LM1282 OSD Video Preamp Demonstration Board Schematic 9 DS012519-12 www.national.com ...
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Pin Descriptions Pin Pin No. Name 1 Red OSD Input 2 Green OSD Input 3 Blue OSD Input 4 Video/OSD Switch 5 Red Video In 8 Green Video In 11 Blue Video CC1 9 7 Ground 10 ...
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Pin Descriptions (Continued) Pin Pin Schematic No. Name 18 Blue Video Out 20 Green Video Out 23 Red Video Out 22 V CC2 25 RGB Cutoff Adjust Functional Description Figure 1 on the front page shows the block diagram of ...
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Functional Description couple the preamp output to the cathode drivers. Therefore only one cutoff adjustment is provided, this is used primarily to optimize the operation of the cathode drivers. Note that the Blank and Clamp Gates are active low. These ...
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... References Zahid Rahim, “Guide to CRT Video Design,” Application Note 861, National Semiconductor Corp., Jan. 1993 Ott, Henry W. Noise Reduction Techniques in Electronic systems , John Wiley & Sons, New York, 1976 DS012519-22 FIGURE 8. LM1282 Rise Time FIGURE 9. LM1282 Fall Time 13 DS012519-23 www.national.com ...
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... National Semiconductor Asia Pacific Customer Fax: +49 (0) 1 80-530 85 86 Response Group Email: europe.support@nsc.com Tel: 65-2544466 Fax: 65-2504466 Tel: +49 (0) 1 80-532 78 32 Email: sea.support@nsc.com Tel: +49 (0) 1 80-534 16 80 National Semiconductor Japan Ltd. Tel: 81-3-5620-6175 Fax: 81-3-5620-6179 ...