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LMT01

ACTIVE

0.5°C Accurate 2-pin Temperature Sensor with a Pulse Train Interface

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Data sheet

LMT01

ACTIVE
Data sheet Order now

Product details

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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Technical documentation

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* Data sheet LMT01 0.5°C Accurate 2-Pin Digital Output Temperature Sensor With Pulse Count Interface datasheet (Rev. D) PDF | HTML 01 Jun 2018
Application note Temperature sensors: PCB guidelines for surface mount devices (Rev. A) 18 Jan 2019
Technical article How to select a temperature sensor probe PDF | HTML 18 Feb 2016
EVM User's guide LMT01EVM User's Guide (Rev. A) 16 Oct 2015
EVM User's guide LMT01EVM User's Guide 19 Mar 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LMT01EVM — LMT01 Evaluation Module

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 (...)

User guide: PDF
Not available on TI.com
Code example or demo

SNIC014 — LMT01 Arduino Example Code v1.0

Supported products & hardware

Supported products & hardware

Products
Digital temperature sensors
LMT01 — 0.5°C Accurate 2-pin Temperature Sensor with a Pulse Train Interface
Download
Firmware

SNIC013 — LMT01EVM Firmware Source v1.21

Supported products & hardware

Supported products & hardware

Products
Digital temperature sensors
LMT01 — 0.5°C Accurate 2-pin Temperature Sensor with a Pulse Train Interface
Hardware development
Evaluation board
LMT01EVM — LMT01 Evaluation Module
Download
GUI for evaluation module (EVM)

SNIC011 — LMT01EVM GUI v1.12.0.0

Supported products & hardware

Supported products & hardware

Products
Digital temperature sensors
LMT01 — 0.5°C Accurate 2-pin Temperature Sensor with a Pulse Train Interface
Hardware development
Evaluation board
LMT01EVM — LMT01 Evaluation Module
Download
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Package Pins CAD symbols, footprints & 3D models
TO-92 (LPG) 2 Ultra Librarian
WSON (DQX) 2 Ultra Librarian
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