Datasheet > LMT90DBZT

LMT90DBZT

更新时间： 2024-02-14 09:14:57

品牌	Logo	应用领域
德州仪器 - TI		传感器温度传感器
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LMT90 SOT-23 Single-Supply Centigrade Temperature Sensor

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SNIS177A –MARCH 2013–REVISED AUGUST 2013

LMT90 SOT-23 Single-Supply Centigrade Temperature Sensor

FEATURES

DESCRIPTION

The LMT90 is

precision integrated-circuit

•

Cost-Effective Alternative to Thermistors

temperature sensor that can sense a −40°C to

+125°C temperature range using a single positive

supply. The LMT90's output voltage is linearly

proportional to Celsius (Centigrade) temperature (+10

mV/°C) and has a DC offset of +500 mV. The offset

allows reading negative temperatures without the

need for a negative supply. The ideal output voltage

of the LMT90 ranges from +100 mV to +1.75V for a

−40°C to +125°C temperature range. The LMT90

does not require any external calibration or trimming

to provide accuracies of ±3°C at room temperature

and ±4°C over the full −40°C to +125°C temperature

range. Trimming and calibration of the LMT90 at the

wafer level assure low cost and high accuracy. The

LMT90's linear output, +500 mV offset, and factory

calibration simplify circuitry required in a single supply

environment where reading negative temperatures is

required. The LMT90's quiescent current is less than

130 μA, thus self-heating is limited to a very low

0.2°C in still air.

Calibrated Directly in Degree Celsius

(Centigrade)

•

Linear + 10.0 mV/°C Scale Factor

±3°C Accuracy Guaranteed at +25°C

Specified for Full −40° to +125°C range

Suitable for Remote Applications

Low Cost Due to Wafer-level Trimming

Operates from 4.5V to 10V

Less than 130 μA Current Drain

Low Self-heating, Less than 0.2°C in Still Air

Nonlinearity Less than 0.8°C Over Temp

APPLICATIONS

•

Industrial

HVAC

Disk Drives

The LMT90 is a cost-competitive alternative to

thermistors.

Automotive

Portable Medical Instruments

Computers

CONNECTION DIAGRAM

Battery Management

Printers

Power Supply Modules

FAX Machines

Figure 1. SOT-23 Top View

TYPICAL APPLICATION

(4.5 V to 10 V)

Output

LMT90

V_OUT= (10 mV/°C u Temp °C) + 500 mV

V_OUT= +1.750 V at +125°C

V_OUT= +750 mV at +25°C

V_OUT= +100 mV at -40°C

Figure 2. Full-Range Centigrade Temperature

Sensor (−40°C to +125°C)

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...14

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LMT90DBZT 替代型号

型号	品牌	替代类型	描述	数据表
LMT90DBZR	TI	类似代替	LMT90 SOT-23 Single-Supply Centigrade Temperature Sensor
FM51S3	FAIRCHILD	功能相似	Low Voltage High Drive Temperature Sensor

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