Datasheet > LMT89

LMT89

更新时间： 2024-09-27 12:30:23

品牌	Logo	应用领域
德州仪器 - TI		传感器温度传感器
页数	文件大小	规格书
13页	920K
描述
LMT89 2.4V, 10 A, SC70, Temperature Sensor

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LMT89 数据手册

LMT89

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SNIS176 –MARCH 2013

LMT89 2.4V, 10µA, SC70, Temperature Sensor

Check for Samples: LMT89

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.

•

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⁺

LMT89

GND

V_O= (−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+

-6

3.88ì10

where: T is temperature, and V_Ois the measured output voltage of the LMT89.

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.

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.

12 3 4 5 6 7...13

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