标签: max2831

TheMAX2831isafullyintegratedtransceiverwithpoweramplifier(PA)for802.11b/gapplications.Thebiascurrentandoutput-matchingnetworkforthetwo-stagePAhavebeenoptimizedtonominallydeliver+18.5dBmwhileconsuming209mAfroma3.3Vsupply(atlessthan5.6%EVMin54Mbps(64-QAM)mode)whilemeeting802.11gspectralmaskrequirements.Atloweroutput-powerlevels,reprogrammingthePABiasCurrentRegistersallowsthebiascurrentandoverallPAcurrenttobereducedforimprovedTxefficiencywhilestillmeeting802.11grequirements.WhenthePAbiascurrentisoptimizedfor+17dBmtransmitpower,acurrentsavingsof26mAisachievedascomparedwiththenominalregistersetting.Whenoperatingat+3dBmtransmitpower,acurrentsavingsof62mAisachievedascomparedwithnominalregistersetting.Furthercurrentsavingscanbeachievedforaspecificoutput-powerlevelthroughoptimizationofthesimpletwo-capacitoroutput-matchingnetwork.……