LM35中文资料.doc

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1、/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National Semiconducto

2、r 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50A，工作电压较宽，可在420V的供电电压范围内正常工作非常省电。TO-92封装引脚图 SO-8 IC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

3、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 +150LM35C, LM35CA -40 to +110LM35D 0 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,LM35DH TO-220 塑料封装引脚图 LM35DT TO-92封装引脚图 LM35CZ,LM35CAZ LM35DZ SO-8 IC式封装引脚图 LM35DM Electrical Characteristics电气特性(注 1, 6） Parameter 参

4、数Conditions 条件LM35ALM35CAUnits (Max.) 单位 Typical 典型Tested Limit 测试极限(注4)Design Limit设计极限(注5)Typical典型Tested Limit 测试极限(注4) Design Limit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) TMINTATMAX 0.18 -0.3

5、5 0.15 -0.3 Sensor Gain传感器增益(Average Slope)平均斜率TMINTATMAX +10.0 +9.9, -+10.0 -+9.9 mV/ -+10.1 -+10.1 Load Regulation 负载调节(注3) 0IL1mA TA=+25 0.4 1.0 -0.4 1.0 -mV/mA TMINTATMAX 0.5 -3.0 0.5 -3.0 mV/mA Line Regulation 线路调整（ 注3) TA=+25 0.01 0.05 0.01 0.05 -mV/V 4VVS30V 0.02 -0.1 0.02 0.1 mV/V Quiescent

6、Current 静态电流(注9) VS=+5V, +25 56 67 -56 67 -A VS=+5V 105 -131 91 -114 A VS=+30V, +25 56.2 68 56.2 68 -A VS=+30V 105.5 133 91.5 -116 A Change of Quiescent Current 变化静态电流(注3) 4VVS30V, +25 0.2 1.0 -0.2 1.0 -A 4VVS30V 0.5 -2.0 0.5 2.0 A Temperature Coefficient of Quiescent Current 静态电流/温度系数-+0.39 -+0.5 +

7、0.39 -+0.5 A/ Minimum Temperature for Rated Accuracy 最低温度 额定精度In circuit of Figure 1,IL=0 +1.5 -+2.0 +1.5 -+2.0 Long Term Stability 长期稳定性T J=TMAX,for 1000 hours 0.08 -0.08 - Electrical Characteristics电气特性(注 1, 6）Parameter 参数Conditions 条件 LM35 LM35C, LM35D Units (Max)单位 Typical典型 Tested Limit 测试极限(注4

8、)DesignLimit 设计极限(注5)Typical典型Tested Limit 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 -2.0TA=TMIN0.9 -2.0 Nonlinearity 非线性(注8) T MINTA

9、TMAX 0.3 -0.5 0.2 -0.5 Sensor Gain 传感器增益(Average Slope) 平均斜率T MINTATMAX +10.0 +9.8, -+10.0 -+9.8, mV/ -+10.2 -+10.2 Load Regulation 负载调节(注3) 0IL1mA TA=+25 0.4 2.0 -0.4 2.0 -mV/mA T MINTATMAX 0.5 -5.0 0.5 -5.0 mV/mA Line Regulation 线路调整(注3) TA=+25 0.01 0.1 -0.01 0.1 -mV/V 4VVS30V 0.02 -0.2 0.02 -0.2

10、mV/V Quiescent Current 静态电流(注9) VS=+5V, +25 56 80 -56 80 -A VS=+5V 105 -158 91 -138 A VS=+30V, +25 56.2 82 -56.2 82 -A VS=+30V 105.5 -161 91.5 -141 A Change of Quiescent Current 变化静态电流(注3) 4VVS30V, +25 0.2 2.0 -0.2 2.0 -A 4VVS30V 0.5 -3.0 0.5 -3.0 A Temperature Coefficient of Quiescent Current 静态电流温

11、度系数-+0.39 -+0.7 +0.39 -+0.7 A/ Minimum Temperature for Rated Accuracy 最低温度 额定精度In circuit of Figure 1,IL=0 +1.5 -+2.0 +1.5 -+2.0 Long Term Stability 长期稳定性T J=TMAX, for 1000 hours 0.08 -0.08 - 注1: Unless otherwise 注d, these specifications apply: 55TJ+150 for the LM35 and LM35A; 40TJ+110 for the LM35C

12、 and LM35CA; and0TJ+100 for the LM35D. VS=+5Vdc and ILOAD=50 A, in the circuit of Figure 2. These specifications also apply from +2 to TMAX in the circuit of Figure 1.Specifications in boldface apply over the full rated temperature range.注2: Thermal resistance of the TO-46 package is 400/W, junction

13、 to ambient, and 24/W junction to case. Thermal resistance of the TO-92 package is180/W junction to ambient. Thermal resistance of the small outline molded package is 220/W junction to ambient. Thermal resistance of the TO-220 packageis 90/W junction to ambient. For additional thermal resistance inf

14、ormation see table in the Applications section.注3: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output due to heating effects can becomputed by multiplying the internal dissipation by the thermal resistance.注4: Tested Limits are guara

15、nteed and 100% tested in production.注5: Design Limits are guaranteed (but not 100% production tested) over the indicated temperature and supply voltage ranges. These limits are not used tocalculate outgoing quality levels.注6: Specifications in boldface apply over the full rated temperature range.注7:

16、 Accuracy is defined as the error between the output voltage and 10mv/ times the devices case temperature, at specified conditions of voltage, current,and temperature (expressed in ).注8: Nonlinearity is defined as the deviation of the output-voltage-versus-temperature curve from the best-fit straigh

17、t line, over the devices rated temperaturerange.注9: Quiescent current is defined in the circuit of Figure 1.注10: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operatingthe device beyond its rated operating

18、conditions. See 注1.注11: Human body model, 100 pF discharged through a 1.5kW resistor.注12: See AN-450 “Surface Mounting Methods and Their Effect on Product Reliability” or the section titled “Surface Mount” found in a current NationalSemiconductor Linear Data Book for other methods of soldering surface mount devices 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） 4-20 mA电流源 (0 to +100)温度数字转换器（串行输出）（128摄氏度满量程）