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Product details

Parameters

Local sensor accuracy (Max) (+/- C) 0.5 Operating temperature range (C) -50 to 150 Supply voltage (Min) (V) 2 Supply voltage (Max) (V) 5.5 Device type Local Interface Pulse Count Supply current (Max) (uA) 39 Temp resolution (Max) (bits) 13 Remote channels (#) 0 Addresses NA Rating Catalog Approx. price (US$) 0.70 | 1ku open-in-new Find other Digital temperature sensors

Package | Pins | Size

TO-92 (LPG) 2 6 mm² 4 x 1.52 WSON (DQX) 2 3 mm² 2 x 1.7 WSON (DQX) 2 - open-in-new Find other Digital temperature sensors

Features

  • 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

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Description

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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No results found. Please clear your search and try again. View all 9
Type Title Date
* Datasheet LMT01 0.5°C Accurate 2-Pin Digital Output Temperature Sensor With Pulse Count Interface datasheet (Rev. D) Jun. 01, 2018
Technical articles How to choose the right thermistor for your temperature sensing application Feb. 12, 2020
Technical articles How to enable thermal safety for automotive infotainment and cluster systems Oct. 15, 2019
Technical articles Driving industrial innovation with small-size sensors Sep. 12, 2019
Application notes Temperature sensors: PCB guidelines for surface mount devices (Rev. A) Jan. 18, 2019
Technical articles How sensor technology is evolving to meet cold chain needs Jun. 18, 2018
Selection guides Temperature sensing cold chain asset tracking Mar. 13, 2018
User guides LMT01EVM User's Guide (Rev. A) Oct. 16, 2015
User guides LMT01EVM User's Guide Mar. 19, 2015

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

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 (...)

Features
  • Evaluate LMT01 2-pin digital temperature sensor performance           
  • Perforated slots allows user to break apart LMT01 device from the EVM           
  • EVM comes in a USB stick form factor           
  • Easy to use GUI           
GUIS FOR EVALUATION MODULES (EVM) Download
SNIC011A.ZIP (176220 KB)

Software development

CODE EXAMPLES & DEMOS Download
SNIC014.ZIP (87 KB)
SUPPORT SOFTWARE Download
SNIC013.ZIP (2976 KB)

Reference designs

REFERENCE DESIGNS Download
RTD replacement for cold junction compensation reference design in a temperature sensor
TIDA-010019 — 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 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
10s Battery Pack Monitoring, Balancing, and Comprehensive Protection. 50A Discharge Reference Design
TIDA-00449 The TI Design TIDA-00449 is a ready, tested hardware platform for 10 cells in series Battery Pack Monitoring, Balancing and Protection for Power Tools. Power Tools increasingly uses highly power dense Li-Ion or Li-Iron Phosphate cells based battery packs that need to be protected from explosion due (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
230-V, 3.5-kW PFC with >98% Efficiency, Optimized for BOM and Size Reference Design
TIDA-00779 The TIDA-00779 is a 3.5-kw, cost competitive power factor regulator converter designed for room air-conditioner and other major appliances. This reference design is a continuous-conduction-mode (CCM) boost converter implemented using TI’s UCC28180 PFC controller provided with all of the (...)
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REFERENCE DESIGNS Download
Motor Monitoring Using Wireless Vibration Sensor Reference Design Enabling Preventive Maintenance
TIDA-01469 — This reference design is a low-power wireless subsystem solution that monitors motors using vibration sensing to determine if preventative maintenance is necessary. An FFT of the vibration data can be sent out to another device using either Bluetooth low energy or sub-1GHz wireless protocols. The (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Dual Channel-to-Channel Isolated Universal Analog Input Module for PLC Reference Design
TIDA-00550 The TIDA-00550, dual channel-to-channel isolated universal analog input module reference design for programmable logic controllers (PLC), combines precision and flexibility. This TI Design used in conjunction with sensor transmitters can measure standard input voltages and currents as well as (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
±0.5°C 2-Wire Galvanically Isolated IC Temp Sensor with Pulse Count Interface Reference Design
TIDA-00752 In order to provide system designers a new cost-effective and easy alternative to assured precision temperature measurement, this reference design discusses the new tiny 2-pin digital output IC temperature sensor with single wire pulse count interface that enhances reliability and greatly simplifies (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
1g Resolution over 15kg Range Sub-100nVpp Noise Front-End Reference Design
TIDA-00765 — TIDA-00765 is a less than 100nVpp analog front end for resistive strain gauge bridge load cell-based weight and vibration measurement. It is ideally suited for appliances, which require high-resolution due to large dynamic range or have considerable weight offset. In the face of significant levels (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
TO-92 (LPG) 2 View options
WSON (DQX) 2 View options

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