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LM35D引脚及功能介绍来源:网络作者:未知LM35D引脚及功能介绍LM35D是把测温传感器与放大电路做在一个硅片上,形成一个集成温度传感器(见图1)。LM35D是一种输出电压与摄氏温度成正比例的温度传感器,其灵敏度为10mV/℃;工作温度范围为0℃-100℃;工作电压为4-30V;精度为±1℃。最大线性误差为±0.5℃;静态电流为80uA。该器件如塑封三极管(TO-92)。该温度传感器最大的特点是是使用时无需外围元件,也无需调试和较正(标定),只要外接一个1V的表头(如指针式或数字式的万用表),就成为一个测温仪(见图2)。温度传感器LM35LM35是由NationalSemiconductor所生产的温度传感器,其输出电压与摄氏温标呈线性关系,转换公式如式,0时输出为0V,每升高1℃,输出电压增加10mV。LM35有多种不同封装型式,外观如图所示。在常温下,LM35不需要额外的校准处理即可达到±1/4℃的准确率。其电源供应模式有单电源与正负双电源两种,其接脚如图所示,正负双电源的供电模式可提供负温度的量测;两种接法的静止电流-温度关系如图所示,在静止温度中自热效应低(0.08℃),单电源模式在25℃下静止电流约50μA,工作电压较宽,可在4—20V的供电电压范围内正常工作非常省电。TO-92封装引脚图SO-8IC式封装引脚图TO-46金属罐形封装引脚图TO-220塑料封装引脚图单电源模式正负双电源模式供电电压35V到-0.2V输出电压6V至-1.0V输出电流10mA指定工作温度范围LM35A-55℃to+150℃LM35C,LM35CA-40℃to+110℃LM35D0℃to+100℃封装形式与型号关系TO-46金属罐形封装引脚图LM35H,LM35AH,LM35CH,LM35CAH,LM35DHTO-220塑料封装引脚图LM35DTTO-92封装引脚图LM35CZ,LM35CAZLM35DZSO-8IC式封装引脚图LM35DMElectricalCharacteristics电气特性(注1,6)Parameter参数Conditions条件LM35ALM35CAUnits(Max.)单位Typical典型TestedLimit测试极限(注4)DesignLimit设计极限(注5)Typical典型TestedLimit测试极限(注4)DesignLimit设计极限(注5)Accuracy精度(注7)TA=+25℃±0.2±0.5-±0.2±0.5-℃TA=−10℃±0.3--±0.3-±1.0℃TA=TMAX±0.4±1.0-±0.4±1.0-℃TA=TMIN±0.4±1.0-±0.4-±1.5℃Nonlinearity非线性(注8)TMIN≤TA≤TMAX±0.18-±0.35±0.15-±0.3℃SensorGain传感器增益(AverageSlope)平均斜率TMIN≤TA≤TMAX+10.0+9.9,-+10.0-+9.9mV/℃--+10.1---+10.1LoadRegulation负载调节(注3)0≤IL≤1mATA=+25℃±0.4±1.0-±0.4±1.0-mV/mATMIN≤TA≤TMAX±0.5-±3.0±0.5-±3.0mV/mALineRegulation线路调整(注3)TA=+25℃±0.01±0.05±0.01±0.05-mV/V4V≤VS≤30V±0.02-±0.1±0.02±0.1mV/VQuiescentCurrent静态电流(注9)VS=+5V,+25℃5667-5667-μAVS=+5V105-13191-114μAVS=+30V,+25℃56.26856.268-μAVS=+30V105.513391.5-116μAChangeofQuiescentCurrent变化静态电流(注3)4V≤VS≤30V,+25℃0.21.0-0.21.0-μA4V≤VS≤30V0.5-2.00.52.0μATemperatureCoefficientofQuiescentCurrent静态电流/温度系数-+0.39-+0.5+0.39-+0.5μA/℃MinimumTemperatureforRatedAccuracy最低温度额定精度IncircuitofFigure1,IL=0+1.5-+2.0+1.5-+2.0℃LongTermStability长期稳定性TJ=TMAX,for1000hours±0.08--±0.08--℃ElectricalCharacteristics电气特性(注1,6)Parameter参数Conditions条件LM35LM35C,LM35DUnits(Max)单位Typical典型TestedLimit测试极限(注4)DesignLimit设计极限(注5)Typical典型TestedLimit测试极限(注4)DesignLimit设计极限(注5)Accuracy,精度LM35,LM35C(注7)TA=+25℃±0.4±1.0-±0.4±1.0-℃TA=−10℃±0.5--±0.5-±1.5℃TA=TMAX±0.8±1.5-±0.8-±1.5℃TA=TMIN±0.8-±1.5±0.8-±2.0℃Accuracy,精度LM35D(注7)TA=+25℃-±0.6±1.5-℃TA=TMAX±0.9-±2.0℃TA=TMIN±0.9-±2.0℃Nonlinearity非线性(注8)TMIN≤TA≤TMAX±0.3-±0.5±0.2-±0.5℃SensorGain传感器增益(AverageSlope)TMIN≤TA≤TMAX+10.0+9.8,-+10.0-+9.8,mV/℃-+10.2---+10.2平均斜率LoadRegulation负载调节(注3)0≤IL≤1mATA=+25℃±0.4±2.0-±0.4±2.0-mV/mATMIN≤TA≤TMAX±0.5-±5.0±0.5-±5.0mV/mALineRegulation线路调整(注3)TA=+25℃±0.01±0.1-±0.01±0.1-mV/V4V≤VS≤30V±0.02-±0.2±0.02-±0.2mV/VQuiescentCurrent静态电流(注9)VS=+5V,+25℃5680-5680-μAVS=+5V105-15891-138μAVS=+30V,+25℃56.282-56.282-μAVS=+30V105.5-16191.5-141μAChangeofQuiescentCurrent变化静态电流(注3)4V≤VS≤30V,+25℃0.22.0-0.22.0-μA4V≤VS≤30V0.5-3.00.5-3.0μATemperatureCoefficientofQuiescentCurrent静态电流温度系数-+0.39-+0.7+0.39-+0.7μA/℃MinimumTemperatureforRatedAccuracy最低温度额定精度IncircuitofFigure1,IL=0+1.5-+2.0+1.5-+2.0℃LongTermStability长期稳定性TJ=TMAX,for1000hours±0.08--±0.08--℃注1:Unlessotherwise注d,thesespecificationsapply:−55℃≤TJ≤+150℃fortheLM35andLM35A;−40°≤TJ≤+110℃fortheLM35CandLM35CA;and0°≤TJ≤+100℃fortheLM35D.VS=+5VdcandILOAD=50μA,inthecircuitofFigure2.Thesespecificationsalsoapplyfrom+2℃toTMAXinthecircuitofFigure1.Specificationsinboldfaceapplyoverthefullratedtemperaturerange.注2:ThermalresistanceoftheTO-46packageis400℃/W,junctiontoambient,and24℃/Wjunctiontocase.ThermalresistanceoftheTO-92packageis180℃/Wjunctiontoambient.Thermalresistanceofthesmalloutlinemoldedpackageis220℃/Wjunctiontoambient.ThermalresistanceoftheTO-220packageis90℃/Wjunctiontoambient.ForadditionalthermalresistanceinformationseetableintheApplicationssection.注3:Regulationismeasuredatconstantjunctiontemperature,usingpulsetestingwithalowdutycycle.Changesinoutputduetoheatingeffectscanbecomputedbymultiplyingtheinternaldissipationbythethermalresistance.注4:TestedLimitsareguaranteedand100%testedinproduction.注5:DesignLimitsareguaranteed(butnot100%productiontested)overtheindicatedtemperatureandsupplyvoltageranges.Theselimitsarenotusedtocalculateoutgoingqualitylevels.注6:Specificationsinboldfaceapplyoverthefullratedtemperaturerange.注7:Accuracyisdefinedastheerrorbetweentheoutputvoltageand10mv/℃timesthedevice’scasetemperature,atspecifiedconditionsofvoltage,current,andtemperature(expressedin℃).注8:Nonlinearityisdefinedasthedeviationoftheoutput-voltage-versus-temperaturecurvefromthebest-fitstraightline,overthedevice’sratedtemperaturerange.注9:QuiescentcurrentisdefinedinthecircuitofFigure1.注10:AbsoluteMaximumRatingsindicatelimitsbeyondwhichdamagetothedevicemayoccur.DCandACelectricalspecificationsdonotapplywhenoperatingthedevicebeyonditsratedoperatingconditions.See注1.注11:Humanbodymodel,100pFdischargedthrougha1.5kWresistor.注12:SeeAN-450“SurfaceMountingMethodsandTheirEffectonProductReliability”orthesectiontitled“SurfaceMount”foundinacurrentNationalSemiconductorLinearDataBookforothermethodsofsolderingsurfacemountdevices单电源模式电流-温度关系正负双电源模式LM35温度控制器应用电路图两线远程温度传感器电路(接地传感器)4-20mA电流源(0℃to+100℃)温度数字转换器(串行输出)(128摄氏度满量程)
本文标题:LM35中文资料
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