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LMT70

現行

0.1C 類比溫度感測器、-5.19 mV/C、高精度配對、輸出啟用針腳

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產品規格表

LMT70

現行
產品規格表 立即訂購

產品詳細資料

Local sensor accuracy (max) 0.13 Operating temperature range (°C) -55 to 150 Supply voltage (min) (V) 2 Supply voltage (max) (V) 5.5 Supply current (max) (µA) 12 Interface type Analog output Sensor gain (mV/°C) -5.19 Rating Catalog
Local sensor accuracy (max) 0.13 Operating temperature range (°C) -55 to 150 Supply voltage (min) (V) 2 Supply voltage (max) (V) 5.5 Supply current (max) (µA) 12 Interface type Analog output Sensor gain (mV/°C) -5.19 Rating Catalog
DSBGA (YFQ) 4 1 mm² 1 x 1
  • 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
  • Very Linear Analog Temperature Sensor with Output Enable Pin
  • NTC Output Slope: -5.19 mV/°C
  • Output On/Off Switch with RDS 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)
  • Ultra Small 0.88 mm by 0.88 mm 4-bump WLCSP (DSBGA) Package

All trademarks are the property of their respective owners.

  • 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
  • Very Linear Analog Temperature Sensor with Output Enable Pin
  • NTC Output Slope: -5.19 mV/°C
  • Output On/Off Switch with RDS 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)
  • Ultra Small 0.88 mm by 0.88 mm 4-bump WLCSP (DSBGA) Package

All trademarks are the property of their respective owners.

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.

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.

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.

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.

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.

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.
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類型 標題 日期
* Data sheet LMT70, LMT70A ±0.05°C Precision Analog Temperature Sensor, RTD and Precision NTC Thermistor IC datasheet (Rev. A) PDF | HTML 2015年 5月 11日
Application note Ultra-Small, Precision Analog Temperature Sensor Measurement With ADC (Rev. A) 2021年 8月 24日
Technical article How to design an infrared thermometer quickly PDF | HTML 2020年 4月 7日
Application note Temperature sensors: PCB guidelines for surface mount devices (Rev. A) 2019年 1月 18日
Application note Wearable Temp-Sensing Layout Considerations Optimized for Thermal Response (Rev. B) 2018年 10月 23日
Application note Design Considerations for Measuring Ambient Air Temperature (Rev. B) 2018年 9月 10日
Technical article Real-time temperature sensing with dual-mode connectivity PDF | HTML 2016年 11月 3日
Technical article Tips and tricks for human body temperature measurement with analog temperature sen PDF | HTML 2015年 9月 8日

設計與開發

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開發板

LMT70EVM — 具有輸出啟用功能的 LMT70 精密類比輸出溫度感測器評估模組

The LMT70EVM allows users to evaluate the performance of the LMT70 temperature sensor. The EVM comes in a USB stick form factor package with an onboard MSP430F5528 microcontroller that interfaces with both the USB port and the LMT70 device. The EVM also comes with perforated slots that the user can (...)

使用指南: PDF
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SNIC010 — LMT70EVM Installer v1.4.0.0

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產品
類比溫度感測器
LMT70 — 0.1C 類比溫度感測器、-5.19 mV/C、高精度配對、輸出啟用針腳 LMT70A — ±0.1°C 匹配準確度精密類比溫度感測器
硬體開發
開發板
LMT70EVM — 具有輸出啟用功能的 LMT70 精密類比輸出溫度感測器評估模組
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模擬型號

LMT70 TINA-TI Reference Design

SNIM008.TSC (1774 KB) - TINA-TI Reference Design
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模擬型號

LMT70 TINA-TI Spice Model

SNIM007.ZIP (9 KB) - TINA-TI Spice Model
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參考設計

TIDA-01576 — 具有 16 位元 1-MSPS 雙同步取樣 ADC 的高準確度類比輸入模組參考設計

This reference design accurately measures 16-channel AC voltage and current inputs using a precision 16-bit SAR ADC over a wide input range. This range covers protection and measurement requirements (including sampling requirements as per IEC 61850-9-2), which simplifies system design and improves (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-010019 — 溫度感測器中適用於冷接點補償法的 RTD 更換參考設計

Temperature-sensing applications that use a thermocouple (TC) require an accurate local temperature sensor to achieve high accuracy. Solutions for design challenges such as cold-junction compensation (CJC) or including an ultra-low power TC analog front-end are highlighted and addressed in this (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-01214 — 採用16 位元 ADC 和數位隔離器的隔離式高準確度類比輸入模組參考設計

This reference design provides accurate measurements of AC voltage and current inputs using a precision 16-bit SAR ADC over a wide input range, covering protection and measurement range (including sampling requirements of IEC 61850-9-2), simplifying system design and improving trip time (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00721 — 被動式 NFC 溫度貼片參考設計

TIDA-00721 is a complete reference design for accurate temperature measurements using a passive NFC tag in a flexible patch form factor. The system offers temperature readings from tag to a NFC receiver such as a NFC enabled smartphone. The high accuracy temperature sensor (LMT70) is interfaced (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00824 — 適合穿戴式應用的人體皮膚溫度感測參考設計

TIDA-00824 features LMT70 analog temperature sensor for measuring human skin temperature. This reference design shows how to mechanically mount the temperature sensor for best thermal conductivity. Signal path considerations on how to achieve greater than 0.1°C accuracy is also discussed in (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00452 — 適用於穿戴式產品的溫度感測器參考設計

This reference design demonstrates temperature sensing aimed at the wearables market. LMT70 temperature sensor is ideal for wearable devices due to its 0.13°C temperature accuracy at human body temperatures. Its small form WCSP package allows it to be heated up quickly and have a fast thermal (...)
Test report: PDF
電路圖: PDF
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