LM35中文资料.docx

1、LM35中文资料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 Semic

2、onductor 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

3、 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 输出电压6V至 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 参数Co

4、nditions 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 - - TA=10 - - TA=TMAX - - TA=TMIN - - Nonlinearity非线性(注8) TMINTATMAX - - Sensor Gain传感器增益(Average Slope)平均斜率TMINTATMAX + +, -+ -+ mV/ -

5、+ -+ Load Regulation 负载调节(注3) 0IL1mA TA=+25 - -mV/mA TMINTATMAX - - mV/mA Line Regulation 线路调整（ 注3) TA=+25 -mV/V 4VVS30V - mV/V Quiescent 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 68 68 -A VS=+30V 133 -116 A Change of Quiescent Current 变化静态电流(注3) 4VVS30V, +2

6、5 - -A 4VVS30V - A Temperature Coefficient of Quiescent Current 静态电流/温度系数-+ -+ + -+ A/ Minimum Temperature for Rated Accuracy 最低温度 额定精度In circuit of Figure 1,IL=0 + -+ + -+ Long Term Stability 长期稳定性T J=TMAX,for 1000 hours - - Electrical Characteristics电气特性(注 1, 6）Parameter 参数Conditions 条件 LM35 LM35C

7、, LM35D Units (Max)单位 Typical典型 Tested Limit 测试极限(注4)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 - - TA=10 - - TA=TMAX - - TA=TMIN - - Accuracy, 精度 LM35D (注7) TA=+25 - - TA=TMAX -TA=TMIN - Nonlinearity 非线性(注8) T MINTATMAX - - Sensor Gain

8、传感器增益(Average Slope) 平均斜率T MINTATMAX + +, -+ -+, mV/ -+ -+ Load Regulation 负载调节(注3) 0IL1mA TA=+25 - -mV/mA T MINTATMAX - - mV/mA Line Regulation 线路调整(注3) TA=+25 - -mV/V 4VVS30V - - 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 82 - 82 -A VS=+30V -

9、161 -141 A Change of Quiescent Current 变化静态电流(注3) 4VVS30V, +25 - -A 4VVS30V - - A Temperature Coefficient of Quiescent Current 静态电流温度系数-+ -+ + -+ A/ Minimum Temperature for Rated Accuracy 最低温度 额定精度In circuit of Figure 1,IL=0 + -+ + -+ Long Term Stability 长期稳定性T J=TMAX, for 1000 hours - - 注1: Unless

10、otherwise 注d, these specifications apply: 55TJ+150 for the LM35 and LM35A; 40TJ+110 for the LM35C 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 ove

11、r the full rated temperature range.注2: Thermal resistance of the TO-46 package is 400/W, junction 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 r

12、esistance of the TO-220 packageis 90/W junction to ambient. For additional thermal resistance information 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 becompu

13、ted by multiplying the internal dissipation by the thermal resistance.注4: Tested Limits are guaranteed 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 outgo

14、ing quality levels.注6: Specifications in boldface apply over the full rated temperature range.注7: 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

15、defined as the deviation of the output-voltage-versus-temperature curve from the best-fit straight 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 a

16、nd AC electrical specifications do not apply when operatingthe device beyond its rated operating conditions. See 注1.注11: Human body model, 100 pF discharged through a 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）