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首页 ADI’s Medical Ultrasound Solutions.pdf

ADI’s Medical Ultrasound Solutions.pdf

ADI’s Medical Ultrasound Soluti…

上传者: weijianxi2 2012-09-26 评分 0 0 0 0 0 0 暂无简介 简介 举报

简介:本文档为《ADI’s Medical Ultrasound Solutionspdf》,可适用于地理考古领域,主题内容包含wwwanalogcomADI’sMedicalUltrasoundSolutionsMedicalUltrasoundSystemTheoryan符等。

wwwanalogcomADI’sMedicalUltrasoundSolutionsMedicalUltrasoundSystemTheoryandTypicalArchitectureBytransmittingacousticenergyintothebodyandreceivingandprocessingthereturningreflections,ultrasoundsystemscangenerateimagesofinternalorgansandstructures,mapbloodflowandtissuemotion,andprovidehighlyaccuratebloodvelocityinformationUltrasoundsystemsincludetransducers,highvoltagemultiplexing,highvoltagetransmitters,TxRxswitches,receivepathAnalogFrontEnd(AFE),beamformers,beamformeddigitalsignalprocessing,displayprocessingandperipheralsTheAFEincludesalownoiseamplifier(LNA)avariablegainamplifier(VGA)anantialiasingfilter(AAF)andananalogtodigitalconverter(ADC)TherearetwokindsofbeamformersdigitalbeamformersandanalogbeamformersfordifferentapplicationsMedicalUltrasoundSystemDesignConsiderationsandMajorChallenges•AFECircuitPerformance,suchas:noiseperformance,SNR(SignaltoNoiseRatio),andDR(DynamicRange)TypicalrequiredDRis:dBforBmode,dBforPWD(PulseWaveDoppler)anddBforCWD(ContinuousWaveDoppler)•TransmitVoltageHightransmitvoltagesareneededtoimprovesignalpenetrationandalsoforharmonicimagingTheacousticpowergrowsasthetransmitvoltageisincreased,butitislimitedbysafetyrequirementsfromagenciessuchastheFDA•BeamFormerComplexityHighimagequalityrequiresalargenumberofbeamformingchannelsTheincreasedcomplexityinturnleadstohigherpowerdissipationandrequiresmoreimagingvolumetoimplement•HeatDissipationHeatdissipationisanimportantissueforminiaturizeddevices,particularlywhenimprovingimagequalityisthegoalHistorically,thelargenumberofhighperformancetransmittersandreceiversrequiredtoimplementtheseimagingsystemsresultedinlargeandexpensivecartbasedimplementationsRecently,advancesinintegrationhaveallowedsystemengineerstodesignsmaller,lowercost,andmoreportableimagingsolutionswithperformanceequaltocartbasedsystemsTotalsolutionsfromADIADIprovidesanextensiveselectionofamplifiers,dataconversion,signalprocessingandpowermanagementsolutionsthatmaximizeimagequality,andreducepowerconsumptionandcostincartbasedandbatterypoweredportableultrasoundequipmentInaddition,ADIprovidesevaluationboards,gerberfiles,simulationtoolsandapplicationsexpertisetosupportcustomerdesignanddevelopmenteffortsPowerManagementSolutionMainSignalChain:DigitalPotentiometerInterfaceReferencesSignalControlSupervisoryThermalManagementOtherKeyComponentsLNAVGAHVAMPDACTransducerArrayTRSwitchesIsolationBeamformerCentralControlProcessorFPGADigitalRxBeamformerADIIntegratedSolutionADCADCADCAmpAmpCWDopplerProcessingVideoDACVideoEncoderVideoCompressionAudioDACLNAVGAADCArray(UptoChannels)AAFClocksIQProcessingAmpAmpFilterDVRADADADADADADADVADxxADCLKADAUSSMADSPADVADVxADAADAasIVADAADAasFilterADAADAasADCDriverADSwitchControlADGADGADuMxADADAADVADVADGainControlDACVideoDecoderHDMIreceiverADAADADxxADADAADAHVMuxandTRSwitchesImageandMotionProcessing(BMode)ColorDopplerProcessing(FMode)wwwanalogcomIntegratedAFESolutionsADI’sADxIntegratedAnalogFrontEnd(AFE)seriesprovidemoreoptionstoaddressultrasoundsystemdesignchallengesCustomerscanselectanAFEtobestmatchRXrequirementsforperformance,powerconsumption,andimagingmodeMoreHealthcareApplicationsandProductsinformation,pleasevisit:http:healthcareanalogcomenimagingultrasoundsegmenthealthhtmlSampleApplications,pleasevisit:http:wwwanalogcomsampleAnalogFrontEnd(AFE)•ADevaluationboardwithschematicandPCBlayoutGerberfile•HighSpeedFPGABasedDataCaptureBoard(HSCADCEVALCZ)•VisualAnalogsoftware•AFESPIInterfaceSoftware(SPIController)•ADxConfigurationTool•ADIsimADCModelingTool•ADBGAPCBLayoutGerberfiles•ADevaluationboardwithschematicandPCBlayoutGerberfile•ADevaluationboardwithschematicandPCBlayoutGerberfileClocking•ADIsimCLKModelingTool•ADxxevaluationsoftwareandboardPowerManagement•ADIsimPower•EvaluationboardDSP•Evaluationboard,emulationtoolsWhatADICanProvidetoCustomersOtherRelatedProductsCustomerInteractionCentercicasiaanalogcomEngineerZonehttp:ezanalogcomindexjspaPartDescriptionADDCtoMHz,QuadIQDemodulatorandPhaseShifterphaseselectoneachoutput(perstep)ADUltralowNoiseVGAswithPreamplifierandProgrammableRINVoltagenoise=nVHzCurrentnoise=pAHzADMsps,LSB(ppm),dBDR,mWpinpincompatiblewithbitsandhighersamplingrateversion,AD,etcADLVDSCMOSOutputwithIntegratedGHzVCOOnchipVCOtunes~GHzexternalVCOVCXOtoGHzdifferentialorsingleAcceptsMHztoMHzcrystalADPDualchannelprovidescompactsolutionsizeOptimizedgatedrivingcircuitryprovideslowsystemnoiseandeasypowersequencecontrolADPHighefficiencyduetoexternallowsideMOSFETsDualchannelprovidescompactsolutionsizeParallelconfigurationprovideshigheroutputcurrentcapacityuptoADSPADI’sBlackfinseriesDSPprovideswideoptionsfordigitalsignalprocessingParameterUnitADADADADADADADCresolutionbitInputVoltage(dBcompression)mVppLNAGaindBLNAInputNoiseVoltagenVHzTGCInputNoiseVoltageMaxVGAgain,Rs=nVHzInputNoiseCurrentpAHzPowerTGCMHzmWchPowerTGCMHzmWchMHzMHzPowerCWmWchTGCOutputDRmidchannelgaindBTGCOutputSNRdBFSoutputdBVGAGainRangedBAAFLowPassCutoffMHz~~~~~~SamplingRate(Max)MSPS()()()()()()CWInputDRdBFSHzCWInputNoiseVoltage(includingoutputamplifiers)nVHzCWLOInterfacexLOxLOxLOxLOxLOxLOCWOutputCompatiblewithADCompatiblewithADCurrentCurrentCurrentCurrentPackagemmxmmTQFPmmxmmTQFPmmxmmBGAmmxmmTQFPmmxmmTQFPmmxmmBGAmmxmmBGASupplyVoltageVOperatingTemperatureVCtoCCtoCCtoCCtoCCtoCCtoC

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