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adsp-21489 evb开发板芯片数据手册ad1938.pdf

发布:2025-05-08约20.78万字共48页下载文档
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4ADC/8DACwithPLL,

192kHz,24-BitCodec

DataSheetAD1938

FEATURESGENERALDESCRIPTION

PLLgeneratedordirectmasterclockTheAD1938isahighperformance,single-chipcodecthatpro-

LowEMIdesignvidesfouranalog-to-digitalconverters(ADCs)withinputand

108dBDAC/107dBADCdynamicrangeandSNReightdigital-to-analogconverters(DACs)withsingle-endedoutput

−94dBTHD+NusingtheAnalogDevices,Inc.,patentedmultibitsigma-delta(Σ-Δ)

3.3Vsinglesupplyarchitecture.AnSPIportisincluded,allowingamicrocontroller

Tolerancefor5Vlogicinputstoadjustvolumeandmanyotherparameters.

Supports24bitsand8kHzto192kHzsamplerates

TheAD1938operatesfrom3.3Vdigitalandanalogs.

DifferentialADCinput

TheAD1938isavailableina48-lead(single-endedoutput)

Single-endedDACoutput

LQFPpackage.Othermembersofthisfamilyincludeadiffe-

Logvolume

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