Analog/Mixed Signal Components for 21st-Century Video

Author: Don Tuite

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Not so very long ago, video signals were analog, limited to a few MHz of bandwidth, and well understood. Today, there are multiple standards for standard and high definition digital television (HDTV), multimedia, and computer graphics. Video signals based on those standards are found in products ranging from personal media players, video game consoles and cell phones to home theaters and workstations for high-end architectural CAD tools - and cinema-quality computer animation. One thing almost all video products have in common is that at some point, the signal must be dealt with in the analog domain. Circuit designers need to know which video amplifiers are most appropriate for each application. They need to be able to address questions such as: how do the characteristics listed on an op-amp datasheet relate the pixel density and refresh rate specs of the different standards? How is it possible to drive video signals down media like twisted-pair? What are the tradeoffs implicit in driving a modest-resolution display in a cell phone or game console with a video signal intended for a high-end home-theatre size screen? This eBook from Electronic Design will help design engineers answer those types of questions.