Datasheet > LMT70

LMT70

更新时间： 2024-01-10 10:19:13

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
29页	1274K
描述
Precision Analog Temperature Sensor, RTD and Precision NTC Thermistor IC

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LMT70, LMT70A

SNIS187A –MARCH 2015–REVISED JULY 2015

LMT70, LMT70A ±0.05°C Precision Analog Temperature Sensor, RTD and Precision NTC

Thermistor IC

1 Features

3 Description

The LMT70 is an ultra-small, high-precision, low-

power CMOS analog temperature sensor with an

output enable pin. Applications for the LMT70 include

virtually any type of temperature sensing where cost-

effective, high precision and low-power are required,

such as Internet of Things (IoT) sensor nodes,

medical thermometers, high-precision instrumentation

and battery powered devices. The LMT70 is also a

great replacement for RTD and precision NTC/PTC

thermistors.

•

Accuracy:

–

±0.05°C (typ) or ±0.13°C (max) from 20°C to

42°C

–

±0.2°C (max) from -20°C to 90°C

±0.23°C (max) from 90°C to 110°C

±0.36°C (max) from -55°C to 150°C

•

Wide Temperature Range: −55°C to 150°C

Matching of Two Adjacent LMT70A on Tape and

Reel: 0.1°C (max) at 30°C

Its output enable pin allows multiple LMT70s to share

one ADC channel, thus simplifying ADC calibration

and reducing the overall system cost for precision

temperature sensing. The LMT70 also has a linear

and low impedance output allowing seamless

interface to an off-the-shelf MCU/ADC. Dissipating

less than 36µW, the LMT70 has ultra-low self-heating

supporting its high-precision over a wide temperature

range.

•

Very Linear Analog Temperature Sensor with

Output Enable Pin

•

NTC Output Slope: -5.19 mV/°C

Output On/Off Switch with R_{DS on}< 80 Ω

Wide Power Supply Range: 2.0 V to 5.5 V

Low Power Supply Current: 9.2 µA (typ)12 µA

(max)

The LMT70A provides unparalleled temperature

matching performance of 0.1°C (max) for two

adjacent LMT70A's picked from the same tape and

reel. Therefore, the LMT70A is an ideal solution for

energy metering applications requiring heat transfer

calculations.

•

Ultra Small 0.88 mm by 0.88 mm 4-bump WLCSP

(DSBGA) Package

2 Applications

•

Internet of Things (IoT) Sensor Nodes

Industrial RTD (Class AA) or Precision NTC/PTC

Thermistor Replacement

Device Information⁽¹⁾

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Medical/Fitness Equipment

DSBGA - WLCSP (4)

YFQ

LMT70

0.88 mm x 0.88 mm

Medical Thermometer

Human Body temperature monitor

Metering Temperature Compensation

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

4 Wide-Range Precision Active RTD or NTC Replacement (−55°C to 150°C)

LMT70 Accuracy vs Temperature

0.60

Coin Cell

0.50

0.40

Battery

2.2V to 3.6V

Max Limit

0.30

0.20

GPIO1

GPIO2

MSP430

0.10

0.00

-0.10

-0.20

-0.30

-0.40

-0.50

-0.60

P2.5_VREF

P2.3

Min Limit

1.5V

Vref

VDD

T_ON

TAO

LMT70

ADC

(12-bit)

20 40 60 80 100 120 140 160

±60 ±40 ±20

DUT Temperature (C)

C001

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...29

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与LMT70相关器件

型号	品牌	获取价格	描述	数据表
LMT70A	TI	获取价格	Precision Analog Temperature Sensor, RTD and Precision NTC Thermistor IC
LMT70AYFQR	TI	获取价格	Precision Analog Temperature Sensor, RTD and Precision NTC Thermistor IC
LMT70AYFQT	TI	获取价格	Precision Analog Temperature Sensor, RTD and Precision NTC Thermistor IC
LMT70YFQR	TI	获取价格	Precision Analog Temperature Sensor, RTD and Precision NTC Thermistor IC
LMT70YFQT	TI	获取价格	Precision Analog Temperature Sensor, RTD and Precision NTC Thermistor IC
LMT78	GAPTEC	获取价格	Wide input, non-isolated & regulated, single output, SMD package
LMT78_0.5R	GAPTEC	获取价格	Wide input, non-isolated & regulated, single output, SMD package
LMT78_02-0.5R	GAPTEC	获取价格	Wide input, non-isolated & regulated, single output, SMD package
LMT78_02-1.0R	GAPTEC	获取价格	Wide input, non-isolated & regulated, single output, SMD package
LMT78_03-0.5R	GAPTEC	获取价格	Wide input, non-isolated & regulated, single output, SMD package

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