所需E币: 3
时间: 2019-12-24 17:08
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摘要:铁路分裂是一个人造的虚拟接地作为参考电压。它是用来设置信号匹配运算放大器的“甜蜜点”。运算放大器具有最线性,无失真的品质,甜蜜点。通常情况下,甜蜜点附近发生单电源轨和地面之间的中心。在信号的情况下,虚拟的地面控制复或开关信号时,通道的DC错误。Maxim>AppNotes>AudioCircuitsGeneralEngineeringTopicsPower-SupplyCircuitsKeywords:OpAmps,VirtualGround,RailSplitter,multiplexer,MUX,voltagedivider,sensorconditioning,Dec19,2008precisionresistor,digitalpots,potentiometer,resistance,singlepowersupply,center,matching-bias,reference,channeloffset,settlingtime,errorAPPLICATIONNOTE4344RailSplitter,fromAbrahamLincolntoVirtualGroundBy:BillLaumeisterAbstract:Railsplittingiscreatinganartificialvirtualgroundasareferencevoltage.Itisusedtosetthesignaltomatchtheopamp's"sweetspot."Anopamphasthemostlinear-anddistortion-freequalitiesatthatsweetspot.Typically,thesweetspotoccursnearthecenterbetweenthesinglepowerrailandground.Inthecase……