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LMT89DCKT

更新时间： 2024-11-25 11:08:11
品牌 Logo 应用领域
德州仪器 - TI 温度传感传感器温度传感器
页数 文件大小 规格书
13页 920K
描述
具有 -11.77mV/°C 增益的 ±2.5°C 模拟输出温度传感器 | DCK | 5 | -55 to 130

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LMT89DCKT 数据手册

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LMT89  
www.ti.com  
SNIS176 –MARCH 2013  
LMT89 2.4V, 10µA, SC70, Temperature Sensor  
Check for Samples: LMT89  
1
FEATURES  
DESCRIPTION  
The LMT89 is a precision analog output CMOS  
integrated-circuit temperature sensor that operates  
over a −55°C to 130°C temperature range. The  
power supply operating range is 2.4 V to 5.5 V. The  
transfer function of LMT89 is predominately linear, yet  
has a slight predictable parabolic curvature. The  
accuracy of the LMT89 when specified to a parabolic  
transfer function is ±1.5°C at an ambient temperature  
of 30°C. The temperature error increases linearly and  
reaches a maximum of ±2.5°C at the temperature  
range extremes. The temperature range is affected  
by the power supply voltage. At a power supply  
voltage of 2.7 V to 5.5 V the temperature range  
extremes are 130°C and −55°C. Decreasing the  
power supply voltage to 2.4 V changes the negative  
extreme to −30°C, while the positive remains at  
130°C.  
2
•
•
•
•
•
Cost-Effective Alternative to Thermistors  
Rated for full −55°C to +130°C range  
Available in an SC70 Package  
Predictable Curvature Error  
Suitable for Remote Applications  
APPLICATIONS  
•
•
•
•
•
•
•
•
•
•
•
•
Industrial  
HVAC  
Automotive  
Disk Drives  
Portable Medical Instruments  
Computers  
Battery Management  
Printers  
The LMT89 quiescent current is less than 10 μA.  
Therefore, self-heating is less than 0.02°C in still air.  
Shutdown capability for the LMT89 is intrinsic  
because its inherent low power consumption allows it  
to be powered directly from the output of many logic  
gates or does not necessitate shutdown at all.  
Power Supply Modules  
FAX Machines  
Mobile Phones  
Automotive  
The LMT89 is a cost-competitive alternative to  
thermistors.  
TYPICAL APPLICATION  
Full-Range Celsius (Centigrade) Temperature Sensor (−55°C TO 130°C) Operating From a Single LI-Ion  
Battery Cell  
V+  
V
O
LMT89  
GND  
NC  
VO = (−3.88×10−6×T2) + (−1.15×10−2×T) + 1.8639  
spacer between the 2 equations  
(1.8639 - V )  
T = -1481.96 + 2.1962ì106 +  
O
-6  
3.88ì10  
where: T is temperature, and VO is the measured output voltage of the LMT89.  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2013, Texas Instruments Incorporated  
1234567...13

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LMT89DCKT 替代型号

型号 品牌 替代类型 描述 数据表
LMT88DCKT TI

完全替代

 2.4-V, 10-μA, SC-70 Temperature Sensor
LMT89DCKR TI

类似代替

 具有 -11.77mV/°C 增益的 ±2.5°C 模拟输出温度传感器 | DCK | 5
LMT88DCKR TI

类似代替

 2.4-V, 10-μA, SC-70 Temperature Sensor

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