TheAD9066isadual6-bitADCthathasbeenoptimizedforlowcostin-phaseandquadrature(I&Q)demodulators.Primaryapplicationsincludedigitaldirectbroadcastsatelliteapplicationswherebroadbandquadraturephaseshiftkeying(QPSK)modulationisused.InthesereceiverstherecoveredsignalisseparatedintoI&Qvectorcomponentsanddigitized.
Toreducetotalsystemcostandpowerdissipation,theAD9066providesaninternalvoltagereferenceandoperatesfromasingle+5voltpowersupply.DigitaloutputsareCMOScompatibleandratedto60MSPSconversionrates.Thedigitalinput(ENCODE)utilizesaCMOSinputstagewithaTTLcompatible(1.4V)threshold.
TheAD9066ishousedina28-pinSOICpackageandavailableintwotemperaturegrades.TheAD9066JRisratedforoperationoverthe0°Cto+70°Ccommercialtemperaturerange.TheAD9066ARisratedforthe-40°Cto+85°Cindustrialtemperaturerange.
Theinternalvoltagereferenceinsuresthattheanaloginputisbiasedtomidscalewithlowoffsetwhendrivenfromanaccoupledsource.Indccoupledapplications,themidscalevoltagereferencecanbeusedtocontrolexternalbiasingamplifierstominimizeoffsetsduetovariationsintemperatureorsupplyvoltage.
