TheAD7811andAD7812arehighspeed,lowpower,10-bitA/Dconvertersthatoperatefromasingle2.7Vto5.5Vsupply.Thedevicescontaina2.3µssuccessiveapproximationA/Dconverter,anon-chiptrack/holdamplifier,a2.5Von-chipreferenceandahighspeedserialinterfacethatiscompatiblewiththeserialinterfacesofmostDSPs(DigitalSignalProcessors)andmicrocontrollers.TheuseralsohastheoptionofusinganexternalreferencebyconnectingittotheVREFpinandsettingtheEXTREFbitinthecontrolregister.TheVREFpinmaybetiedtoVDD.Atslowerthroughputratesthepower-downmodemaybeusedtoautomaticallypowerdownbetweenconversions.

ThecontrolregistersoftheAD7811andAD7812allowtheinputchannelstobeconfiguredassingle-endedorpseudodifferential.Thecontrolregisteralsofeaturesasoftwareconvertstartandasoftwarepower-down.Twoofthesedevicescansharethesameserialbusandmaybeindividuallyaddressedinamultipackageapplicationbyhardwiringthedeviceaddresspin.TheAD7811isavailableinasmall,16-lead0.3"wide,plasticdual-in-linepackage(mini-DIP),ina16-lead0.15"wide,smalloutlineIC(SOIC)andina16-lead,ThinShrinkSmallOutlinePackage(TSSOP).TheAD7812isavailableinasmall,20-lead0.3"wide,plasticdual-in-linepackage(mini-DIP),ina20-lead,smalloutlineIC(SOIC)andina20-lead,ThinShrinkSmallOutlinePackage(TSSOP).