16-Bit 100 kSPS16位100 kSPS 采样模数转换器

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1、16-Bit100kSPSaSamplingADCAD677FEATURESFUNCTIONALBLOCKDIAGRAMAutocalibratingOn-ChipSample-HoldFunctionACHIPSerialOutputVIN1016-BITAGNDSENSE9DACCOMP16BitsNoMissingCodesINPUT61LSBINLVREF11BUFFERSCALAGND8DAC–99dBTHD92dBS/(N+D)LOGICTIMING1MHzFullPowerBand

2、widthLEVELTRANSLATORS15BUSY14SCLKCAL16SAR3SDATAMICROCODEDCLK2CONTROLLERALUSAMPLE1RAMDCHIPAD677PRODUCTDESCRIPTIONPRODUCTHIGHLIGHTSTheAD677isamultipurpose16-bitserialoutputanalog-to-1.Autocalibrationprovidesexcellentdcperformancewhiledigitalconverterwh

3、ichutilizesaswitched-capacitor/chargeeliminatingtheneedforuseradjustmentsoradditionalexter-redistributionarchitecturetoachievea100kSPSconversionnalcircuitry.rate(10mstotalconversiontime).Overallperformanceisopti-2.±5Vto±10Vinputrange(±VREF).mizedbydi

4、gitallycorrectinginternalnonlinearitiesthroughon-chipautocalibration.3.Availablein16-pin0.3"skinnyDIPor28-leadSOIC.TheAD677circuitryissegmentedontotwomonolithicchips—4.EasyserialinterfacetostandardADIDSPs.adigitalcontrolchipfabricatedonAnalogDevicesD

5、SPCMOS5.TTLcompatibleinputs/outputs.processandananalogADCchipfabricatedonourBiMOSII6.Excellentacperformance:–99dBTHD,92dBS/(N+D)process.Bothchipsarecontainedinasinglepackage.peakspurious–101dB.TheAD677isspecifiedforac(or“dynamic”)parameterssuch7.Indu

6、stryleadingdcperformance:1.0LSBINL,±1LSBfullasS/(N+D)Ratio,THDandIMDwhichareimportantinsig-scaleandoffset.nalprocessingapplications.Inaddition,dcparametersarespecifiedwhichareimportantinmeasurementapplications.TheAD677operatesfrom+5Vand±12Vsuppliesan

7、dtypi-callyconsumes450mWusinga10Vreference(360mWwith5Vreference)duringconversion.Thedigitalsupply(VDD)isseparatedfromtheanalogsupplies(VCC,VEE)forreduceddigi-talcrosstalk.Ananaloggroundsenseisprovidedtoremotelysensethegroundpotentialofthesignalsource

8、.Thiscanbeuse-fulifthesignalhastobecarriedsomedistancetotheA/Dcon-verter.Separateanaloganddigitalgroundsarealsoprovided.TheAD677isavailableina16-pinnarrowplasticDIP,16-pinnarrowside-brazedceramicpackage,or28-leadSOIC.Aparal-leloutputversion,theAD676,