AD9361 辅助ADC DAC 通用接口 温度传感器.pdf

《AD9361 辅助ADC DAC 通用接口 温度传感器.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、AD9361AuxADC/AuxDAC/GPO/TempsensorPage1of10AD9361AuxADC/AuxDAC/GPO/TempADIConfidentialsensorTABLEOFCONTENTSOverview..........................................................................................................................................................

2、....................................................................3AUXDAC..................................................................................................................................................................................................

3、...........................4AUXADC.............................................................................................................................................................................................................................6Generalpurpos

4、eoutputcontrol(GPO[3:0]).................................................................................................................................................................9REVISIONHISTORY8/2011—Rev2.0InitialDocument1/2012—Rev2.1Correctedthetempsensorequat

5、ion2/2012--Rev2.2CorrectedtheAUXADCequations5/2012-Rev2.3Correctedfigure3andAuxADCclockfrequencyequation2/2013–Rev2.4UpdatedTemperatureSensorsectionPage2of10ADIAD9361AuxADC/AuxDAC/GPO/TempConfidentialsensorOVERVIEWThisdocumentdescribesoperationoftheauxiliaryfeaturesava

6、ilableintheAD9361.Thesefeatureshelpsimplifysystemtasksandloweroverallsystemcost.Theyincludetwo10-bitauxiliaryDACs,one12-bitauxiliaryADC,aninternaltemperaturesensor,andfourgeneral-purposeoutput(GPO)pins.ThisdocumentdescribeshowtocontrolthesefeaturesthroughtheSPIport.Pag

7、e3of10AD9361AuxADC/AuxDAC/GPO/TempADIConfidentialsensorAUXDACThetwoAuxDACsare10-bitgeneralpurposeDACs.Eachiscapableofsourcing10mA.Forstability,placea0.1uFcapacitorontheoutputofeachAuxDAC.SPIwritesenabletheAuxDAC.TheAuxDACmaybesetformanualoperationorbesettoautomatically

8、toggleduringTDDoperationtoreducecontrolrequiredfromtheDigitalBaseBand(DBB).Figure1:AuxDACOutputVoltagevs.REG0x18-0x1B