CCDhighdefinitionimagesystem.
Basedontheprincipleofdoublesamplingtheoryandchargeconservation,aCMOSswitchedcapacitoranti aliasfilterwith5th -orderellipticlowpassstructureispresented,whichCanfilter
qualityofinputoutsidebandwidthnoiseinimagetoADCissignalseffectively.Sothesignalimproved.Thedoublesamplingtopologybreakthroughthelimitationofopampunitgainbandwidthandslewrate,andthehighfrequencyperformanceofthefilterisimproved.
zeroCombinedCascodeMillerwithoutputpolecompensation,anovdfrequency
methodcallcompensation
compensation
rangewithoutforrailtorailvoltagebufferiscapacitor,勰wellaspresented.Thisreducetheensuretheopamptooperatestablyincommoninputincreasingthecircuitcomplexity.Thisbuffercanrealizebothhighaccuracysignaltransferandenoughdrivingability.
Onthebasisofthesystemperformancerequirementandpoweroptimizationmethod,12bits100MHzPipelineADCarchitectureisbuilt.Itincludes9stageswith(4,2,2,2,2,2,2,2,2)resolutiondistribution.AccordingtotheanalysisoftechnologyIll
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