adsp-21489 evb开发板芯片数据手册ad1938.pdf
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