LM35D引脚及功能介绍
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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LM35
LM35 是由National Semiconductor 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-8 IC式封装引脚图
图 装引脚图
TO-46金属罐形封装引脚
TO-220 塑料封
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 +150℃
LM35C, LM35CA -40℃ to +110℃ LM35D 0℃ to +100℃
封装形式与型号关系 TO-46金属罐形封装引脚图 TO-220 塑料封装引脚图 TO-92封装引脚图 SO-8 IC式封装引脚图 LM35H,LM35AH,LM35CH,LM35CAH,LM35DH LM35DT LM35CZ,LM35CAZ LM35DZ LM35DM Electrical Characteristics电气特性(注 1, 6)
LM35A Conditions 条件 Tested Design Typical Limit 测Limit设Typical典型 试极限(注4) TA=+25℃ Accuracy 精度 (注7 ) TA=?10℃ TA=TMAX TA=TMIN ± ± ± ± ± - ± ± - +, 计极限(注5) - - - - ± - ± ± ± ± ± + 典型 LM35CA Tested Limit 测试 极限(注4) ± - ± - - - Design Units Limit设(Max.) 计极限(注5) ℃ ℃ ℃ ℃ ℃ mV/℃ 单位 Parameter 参数 - ± - ± ± + Nonlinearity非线性(注8) T MIN≤TA≤TMAX ± Sensor Gain传感器增益TMIN≤TA≤TMAX +
(Average Slope)平均斜率 - Load Regulation 负载调节TA=+25℃ (注3) 0≤IL≤1mA Line Regulation 线路调整( 注3) Quiescent Current 静态电流(注9) Change of Quiescent Current 变化静态电流 (注3) Temperature Coefficient of Quiescent Current 静态- 电流/温度系数 Minimum Temperature for Rated Accuracy 最低温度 额定精度 稳定性 In circuit of Figure 1,IL=0 - ± + ± - ± - 67 - 68 - - ± - ± ± ± ± 56 91 + - ± - ± + - ± - ± - 114 - 116 - + mV/mA mV/mA mV/V mV/V μA μA μA μA μA μA μA/℃ TMIN≤TA≤TMAX ± TA=+25℃ 4V≤VS≤30V ± ± ± - 131 VS=+5V, +25℃ 56 VS=+5V 105 67 - 68 - VS=+30V, +25℃ VS=+30V 4V≤VS≤30V, +25℃ 4V≤VS≤30V + 133 - + - - - + - + + - + ℃ Long Term Stability 长期T J=TMAX,for 1000 hours ± - - ± - - ℃ Electrical Characteristics电气特性(注 1, 6)
LM35 Tested Design Parameter 参数 Conditions 条件 Typical典型 Limit Limit 设测试 极限 (注4) TA=+25℃ 10℃ Accuracy,精度 LM35, TA=?LM35C (注7) TA=TMAX TA=TMIN TA=+25℃ Accuracy, 精度 LM35D (注7) Nonlinearity 非线性(注8) Sensor Gain 传感器增益(Average Slope) 平TA=TMAX TA=TMIN T MIN≤TA≤TMAX ± + - - +, + ± - - - ± ± ± ± ± - ± - - - - ± 计 极限 (注5) ± ± ± ± ± ± ± ± + - Typical典型 LM35C, LM35D Tested Design Limit Limit 设测试 极限 (注4) ± - - - ± - - - - - - ± ± ± - ± ± ± +, + 计 极限 (注5) ℃ ℃ ℃ ℃ ℃ ℃ ℃ ℃ Units (Max)单位 T MIN≤TA≤TMAX mV/℃
均斜率 Load Regulation 负载TA=+25℃ 调节(注3) 0≤IL≤1mA T MIN≤TA≤TMAX Line Regulation 线路TA=+25℃ 调整(注3) 4V≤VS≤30V VS=+5V, +25℃ Quiescent Current 静VS=+5V 态电流(注9) VS=+30V, +25℃ VS=+30V Current 变化静态电流(注3) Temperature Coefficient of Quiescent Current 静态电流温度系数 Minimum Temperature for Rated Accuracy 最低温度 额定精度 长期稳定性 In circuit of Figure + 1,IL=0 ± - + + - + ℃ - + - + + - + μA/℃ ± ± ± ± 56 105 ± - ± - 80 - 82 - - - ± - ± - 158 - 161 - ± ± ± ± 56 91 ± - ± - 80 - 82 - - - ± - ± - 138 - 141 - mV/mA mV/mA mV/V mV/V μA μA μA μA μA μA Change of Quiescent 4V≤VS≤30V, +25℃ 4V≤VS≤30V Long Term Stability T J=TMAX, for 1000 hours - - ± - - ℃ 注1: Unless otherwise 注d, these specifications apply: ?55℃≤TJ≤+150℃ for the LM35
and LM35A; ?40°≤TJ≤+110℃ for the LM35C and LM35CA; and
0°≤TJ≤+100℃ for the LM35D. VS=+5Vdc and ILOAD=50 μA, 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 to ambient, and 24℃/W junction to case. Thermal resistance of the TO-92 package is
180℃/W junction to ambient. Thermal resistance of the small outline molded package is 220℃/W junction to ambient. Thermal resistance of the TO-220 package
is 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 be
computed 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 to calculate outgoing 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 device’s case temperature, at specified conditions of voltage, current,
LM35中文资料
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