单一5V供电的高分辨率视频解决方案

系统设计者一直关注减少他们产品中的电源的数量。追求以现有的5V逻辑电源来最大化模拟性能，实现了低电压高性能的视频解决方案。对于高分辨率的应用，Linear公司推出LT6557/LT6558交流耦合放大器、LT6556带缓存的多路复用器、LT6559三路电流反馈运算放大器，这些器件都可很好地工作于5V环境中。HighResolutionVideoSolutionsUsingSingle5VPowerDesignNote396JonMunsonIntroductionpowersupply.SomepartsthattthismoldincludetheVideocabledriveramplieroutputstagestraditionallyLT6556,aUXGA-resolution(1600×1200pixel)RGB2:1requireasupplyvoltageofatleast6Vinordertoprovideinput-portbufferedmultiplexer(MUX);theLT6557andtherequiredoutputswing.ThisrequirementisusuallyLT6558UXGAxedgaintripleampliersthatincludemetwith5Vsuppliesbyaddingaboostregulatororaon-chipbiasingtominimizeexternalpartcount;andthesmalllocalnegativerail,sayviathep