TheAD7823isahighspeed,lowpower,8-bitA/Dconverterthatoperatesfromasingle2.7Vto5.5Vsupply.Thepartcontainsa4.5µssuccessiveapproximationA/Dconverter,inherenttrack-and-holdfunctionality(withapseudodifferentialinput)andahighspeedserialinterfacethatinterfacestomostmicrocontrollers.AD7823isfullyspecifiedoveratemperaturerangeof-40°Cto+125°C.

ByusingatechniquethatsamplesthestateoftheCONVST(convertstart)signalattheendofaconversion,theAD7823maybeusedinanautomaticpower-downmode.Whenusedinthismode,theAD7823powersdownautomaticallyattheendofaconversionand"wakesup"atthestartofanewconversion.Thisfeaturesignificantlyreducesthepowerconsumptionofthepartatlowerthroughputrates.TheAD7823canalsooperateinahighspeedmodewherethepartisnotpowereddownbetweenconversions.Inthishighspeedmodeofoperation,theconversiontimeoftheAD7823is4.5µs.Themaximumthroughputrateisdependentonthespeedoftheserialinterfaceofthemicrocontroller.

Thepartisavailableinasmall,8-pin0.3"wide,plasticdual-in-linepackage(mini-DIP);inan8-lead,smalloutlineIC(SOIC);andinan8-leadmicroSOICpackage.