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1、4-20mA电流输出芯片比较(1)TI公司4-20mA电流输出芯片比较*1OV叫11,5towo工OSfxanAd|jst-=O伽ASan5niA12ZWDAi*j疽Rt9TfimASpari%土1严Sliarliswlsxt|i4河P-ChwiwiMOSFETIseiexiIHPUTRANGEMOUTPUTRA94&E(fflAlPINJFINI4PW5PIN9pinigMOCcminfkHCOHRComMaCininpjriComGamCM。+1CAReiuMCamOpen时口*1CARefIn口直ComCam4昏CamCamC&n1-5CvnComCamCam4-23MCARefComG
2、amUpe-ngRefC%)10+1642氏耳、也thetoilimpedanceseenat?emitterofLheinternalNIPNtransistorFig.1XTR110应用电路XTR111内部没有提供将0V输入转换成4mA输出的电路，最常用的方法是采用两个电阻网络连接参考电压和输入信号进行分压输入Fig.2XTR111应用电路TYPEPACKAGETIP29CIP31CTO楣TO間TD-220PcsiSitiE1匚kEncnkrweIcxS),7W4-QmA_0-01nFXTO112MTW114MOTESmRj-耳td书瞒血rcnsnrnirnumf臨d-smoGramre孕
3、旬-2屮丹IjOChpFHHCl占甩冋一RJ打_1片韭_叱匹丿4-20mACURRENTTRANSMITTERwithSensorExcitationandLinearizationNAMEXTR105XTR112XTR114SUPPLYRANGE7.5Vto36VPRECISIONCURRENTSOURCES0.8mAINPUTEXCITATION2-OR3-WIRERTDOPERATIONOutputCurrentEquationIO=VIN?(40/RG)+4mA,VINinVolts,RGin?InputOffsetVoltageVCM=2VPROBABLEPRICE25元50元60元
4、wtlBfER|RTDRHSrsbiriCBfll*(Tg+T.AX宾KTR112:诂豐區壬邸i扎Ftu=3.JU1KTW1H匕片g100mA住屯H罰RjRTORantinxvtIknilmMnaJlIUf=WM节LTiFtf匕4nfiA曲KHAWUnRw20HiNOTEfl|S46竝中1曲5TWEPJXUGE时昉irPSKTIP31BTO2Td逊ircwaFig.4XTR115/XTR116/XTR117原理图420mA.CThi11Fig.5RCV424-20mA电流转0-5V电圧基本连接ranSl*CsowHHNOTEAhre-wircRTDcannedEinisshown”Forrno
5、kYRTDalmawtflttTDtQfMtiinAremmrrWiddcE鬆驚gn3算LKg*賦53tFlgixv3igndTab中LFig.6RCV42-4-20mA电流转0-5V电压实例|vW*Mta眄CML帖驱CuiWH：-w?3.SLLFig.7XTR101-Precision,LowDrift4-20mATWO-WIRETRANSMITTERVfiEa5.1V)4Fig.8XTR106-4-20mACURRENTTRANSMITTERwitBridgeExcitationandLinearizationFICLRE2.XTRICSIniema)Dkrwi.Fig.9XTR108-4
6、-20mA,TWO-WIRETRANSMITTERSmart”ProgrammablewithSignalConditioningQNQ1FigureZ.StandanJIGircuklforVolLageOutputIIYY忸v-Fignurt3.StandardCirculitf-orCurrenlOutputMo-dFig.10XTR300-IndustrialAnalogCurrent/VoltageOUTPUTDRIVER(2)AD公司4-20mA电流输出芯片比较DACandCurrentTransmitterNAMEAD420AD5412AD5422AD694FUNCTIONDAC
7、4-20mATransmitterRESOLUTION161216-SUPPLYRANGE12-32VAVDD:10.8-40VAVSS:-26.4-0V4.5Vto36VINPUT16BITDIGITALSerialInput12BITDIGITALSerialInput16BITDIGITALSerialInputPrecalibratedInputRanges:0Vto2V,0Vto10VOUTPUT4mAto20mA,0mAto20mA,0mAto24Ma4mAto20mA,0mAto20mA,0mAto24mA4mAto20mA,0mAto20mA,0mAto24mA4-20mA,0
8、-20mA0Vto5V,0Vto10V,V,V0Vto5V,0Vto10V,V,10V0Vto5V,0Vto10V,V,10VPROBABLEPRICE60元50元60元50元Fig.11AD420standardconfigurationREHN*V5M5EIOPHITE；FAULtREFOUTCLEAR-VteM4tTTCDIWOOUTVADCIPAGNDDGNCRXDRTSJ-C2oT22iiFrefOSDOpFEBfcnruINTERFACEUARTIMTERFACEmH|jfowTO-iS4V绘需24-a.uFVAD5412AD5422wTRp1DMJ*ISOKlIPFAD5700G
9、ND-o-JC1丄Z.ZftFT一TV?T5Fig吩仙Fig.12AD5412/5422inHARTconfigurationOLTJiaEnmncMcrwLWL濮齒1WVOLTA*fieiTfiCNorADBM*iniJkorrtcrQFFtA.TCM一V4cawn1*iomiO牌亀算UPPSCOAiUQHMirjimalConnectionsforOfto10VSingtEndedtnput420mAOutputTOVReferenceOutputFig.13AD694standardconfiguration(3)AMG公司4-20mA电流输出芯片比较Vpj-6*35VVi%丨I产max
10、10mA咯=635VDESCRIPTIONPROBABLEPRICEAM400AM460%产5/10V1Fts/T=eg.W420mA40元叫甘=5/10V人,c=upto10mANAMEDifl&rentialinputvoltagei400inVAM400InputvoltaicreferencediogroundO.VLt-5Ve.g.0.5V0JV*=Q4.20inA50元tVOLT=0.V(r5Vadjustable,c.g.O.51OVSingle-endedinputsignal如=0/4.20mAAM460j,一：伫40元AM462Sitigle-ciuicdinputvolt
11、agemvAM462Le19AM400-0XultgtrvfeivneeIIJS(iruuniiBlockdidrarnofAM400showingcxlcrnalcoinpuiieiKs13-iiccircuitwithacurrentoutput)Fig.14AM400standardconfiguration?1。Y耳YITTJSLmmY(rrul/ntlULotkdiagnmufAM4C0withkmutwmcKJncntx(3-wiri：virtuittbrtuircnluutpul)Fig.15AM460standardconfigurationflfr.fi0BlockdiagramofAM462(3-wirecircuitforcurrentoutput)*Pin1and2havetobeconnected.Fig.16AM462standardconfiguration另查过Linear和MAXIM公司无相关产品
4-20mA电流环、电压电流转换芯片方案比较
