SSM2305,pdfdatasheet(Class-DAudioPowerAmplifie)下载(Windows机械电子软件下载) - 秒下下载站

SSM2305,pdfdatasheet(Class-DAudioPowerAmplifie): 大小：544KB; 语言：简体中文; 分类：机械电子; 平台：Vista,Win2003,WinXP,Win2000,NT,

软件简介

TheSSM2305featuresahighefficiency,lownoisemodulationschemethatdoesnotrequireexternalLCoutputfilters.Themodu-lationprovideshighefficiencyevenatlowoutputpower.TheSSM2305operateswith90%efficiencyat1.3Winto8Ωor83%efficiencyat2.2Winto4Ωfroma5.0VsupplyandhasanSNRof>98dB.Spread-spectrumpulsedensitymodulationisusedtoprovidelowerEMI-radiatedemissionscomparedwithotherClass-Darchitectures.

TheSSM2305hasamicropowershutdownmodewithamaximumshutdowncurrentof30nA.ShutdownisenabledbyapplyingaLogic0totheSDpin.Thedevicealsoincludespop-and-clicksuppressioncircuitry.Thisminimizesvoltageglitchesattheoutputduringturn-onandturn-off,thusreducingaudiblenoiseonactivationanddeactivation.

ThefullydifferentialinputoftheSSM2305providesexcellentrejectionofcommon-modenoiseontheinput.Inputcouplingcapacitorscanbeomittedifthedcinputcommon-modevoltageisapproximatelyVDD/2.

TheSSM2305hasexcellentrejectionofpowersupplynoise,includingnoisecausedbyGSMtransmissionburstsandRFrectification.PSRRistypically60dBat217Hz.

ThedefaultgainoftheSSM2305is18dB,butuserscanreducethegainbyusingapairofexternalresistors.

TheSSM2305isspecifiedoverthecommercialtemperaturerange(−40°Cto+85°C).Itisavailableinbothan8-lead,3mm×3mmleadframechipscalepackage(LFCSP)andan8-leadminismalloutlinepackage(MSOP).