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數位溫度感測器

LMT01

現行

具有脈衝串介面的 0.5°C 準確 2 接腳溫度感測器

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LMT01

現行
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產品詳細資料

Local sensor accuracy (max) 0.5 Type Local Operating temperature range (°C) -50 to 150 Supply voltage (min) (V) 2 Interface type Pulse Count Supply voltage (max) (V) 5.5 Supply current (max) (µA) 39 Temp resolution (max) (bps) 13 Remote channels (#) 0 Rating Catalog
Local sensor accuracy (max) 0.5 Type Local Operating temperature range (°C) -50 to 150 Supply voltage (min) (V) 2 Interface type Pulse Count Supply voltage (max) (V) 5.5 Supply current (max) (µA) 39 Temp resolution (max) (bps) 13 Remote channels (#) 0 Rating Catalog
TO-92 (LPG) 2 6.08 mm² 4 x 1.52 WSON (DQX) 2 3.4 mm² 2 x 1.7
  • High Accuracy Over –50°C to 150°C Wide Temperature Range
    • –20°C to 90°C: ±0.5°C (Maximum)
    • 90°C to 150°C: ±0.625°C (Maximum)
    • –50°C to –20°C: ±0.7°C (Maximum)
  • Precision Digital Temperature Measurement Simplified in a 2-Pin Package
  • Pulse Count Current Loop Easily Read by Processor. Number of Output Pulses is Proportional to Temperature With 0.0625°C Resolution
  • Communication Frequency: 88 kHz
  • Conversion Current: 34 µA
  • Continuous Conversion Plus Data-Transmission Period: 100 ms
  • Floating 2-V to 5.5-V (VP–VN) Supply Operation With Integrated EMI Immunity
  • Multiple 2-Pin Package Offerings: TO-92/LPG (3.1 mm × 4 mm × 1.5 mm) – ½ the Size of Traditional TO-92 and WSON With Wettable Flanks
  • High Accuracy Over –50°C to 150°C Wide Temperature Range
    • –20°C to 90°C: ±0.5°C (Maximum)
    • 90°C to 150°C: ±0.625°C (Maximum)
    • –50°C to –20°C: ±0.7°C (Maximum)
  • Precision Digital Temperature Measurement Simplified in a 2-Pin Package
  • Pulse Count Current Loop Easily Read by Processor. Number of Output Pulses is Proportional to Temperature With 0.0625°C Resolution
  • Communication Frequency: 88 kHz
  • Conversion Current: 34 µA
  • Continuous Conversion Plus Data-Transmission Period: 100 ms
  • Floating 2-V to 5.5-V (VP–VN) Supply Operation With Integrated EMI Immunity
  • Multiple 2-Pin Package Offerings: TO-92/LPG (3.1 mm × 4 mm × 1.5 mm) – ½ the Size of Traditional TO-92 and WSON With Wettable Flanks

The LMT01 device is a high-accuracy, 2-pin temperature sensor with an easy-to-use pulse count current loop interface, which makes it suitable for onboard and offboard applications in automotive, industrial, and consumer markets. The LMT01 digital pulse count output and high accuracy over a wide temperature range allow pairing with any MCU without concern for integrated ADC quality or availability, while minimizing software overhead. TI’s LMT01 device achieves a maximum ±0.5°C accuracy with very fine resolution (0.0625°C) over a temperature range of –20°C to 90°C without system calibration or hardware and software compensation.

The LMT01’s pulse count interface is designed to directly interface with a GPIO or comparator input, thereby simplifying hardware implementation. Similarly, the LMT01’s integrated EMI suppression and simple 2-pin architecture makes it suitable for onboard and offboard temperature sensing in a noisy environment. The LMT01 device can be easily converted into a two-wire temperature probe with a wire length up to two meters. See LMT01-Q1 for the automotive qualified version.

The LMT01 device is a high-accuracy, 2-pin temperature sensor with an easy-to-use pulse count current loop interface, which makes it suitable for onboard and offboard applications in automotive, industrial, and consumer markets. The LMT01 digital pulse count output and high accuracy over a wide temperature range allow pairing with any MCU without concern for integrated ADC quality or availability, while minimizing software overhead. TI’s LMT01 device achieves a maximum ±0.5°C accuracy with very fine resolution (0.0625°C) over a temperature range of –20°C to 90°C without system calibration or hardware and software compensation.

The LMT01’s pulse count interface is designed to directly interface with a GPIO or comparator input, thereby simplifying hardware implementation. Similarly, the LMT01’s integrated EMI suppression and simple 2-pin architecture makes it suitable for onboard and offboard temperature sensing in a noisy environment. The LMT01 device can be easily converted into a two-wire temperature probe with a wire length up to two meters. See LMT01-Q1 for the automotive qualified version.

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類型 標題 日期
* Data sheet LMT01 0.5°C Accurate 2-Pin Digital Output Temperature Sensor With Pulse Count Interface datasheet (Rev. D) PDF | HTML 2018年 6月 1日
Application note Temperature sensors: PCB guidelines for surface mount devices (Rev. A) 2019年 1月 18日
Technical article How to select a temperature sensor probe PDF | HTML 2016年 2月 18日
EVM User's guide LMT01EVM User's Guide (Rev. A) 2015年 10月 16日
EVM User's guide LMT01EVM User's Guide 2015年 3月 19日

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開發板

LMT01EVM — LMT01 評估模組

The LMT01EVM allows users to evaluate the performance of the LMT01 2-pin digital temperature sensor. The EVM comes in a USB stick form factor package with an onboard MSP430F5528 microcontroller that interfaces with the host computer's USB port and the LMT01 device. The EVM features perforated (...)

使用指南: PDF
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程式碼範例或展示

SNIC014 — LMT01 Arduino Example Code v1.0

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LMT01 — 具有脈衝串介面的 0.5°C 準確 2 接腳溫度感測器
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SNIC013 — LMT01EVM Firmware Source v1.21

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數位溫度感測器
LMT01 — 具有脈衝串介面的 0.5°C 準確 2 接腳溫度感測器
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LMT01EVM — LMT01 評估模組
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SNIC011 — LMT01EVM GUI v1.12.0.0

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數位溫度感測器
LMT01 — 具有脈衝串介面的 0.5°C 準確 2 接腳溫度感測器
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電路圖: PDF
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電路圖: PDF
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This reference design is ready tested for 10 cells in series battery pack monitoring, balancing and protection for power tools. Power tools increasingly use highly power-dense Li-Ion or Li-Iron phosphate cells based battery packs that need to be protected from explosion due to incorrect charging or (...)
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

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TIDA-00550, a dual channel-to-channel isolated universal analog input module reference design for programmable logic controllers (PLCs), combines precision and flexibility. This reference design, used in conjunction with sensor transmitters, can measure standard input voltages and currents as (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00752 — 具有脈衝計數介面的 ±0.5°C 雙線電氣隔離 IC 溫度感測器參考設計

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Design guide: PDF
電路圖: PDF
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TO-92 (LPG) 2 Ultra Librarian
WSON (DQX) 2 Ultra Librarian
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