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


Product details


Local sensor accuracy (Max) (+/- C) 0.5 Product type Local Operating temperature range (C) -40 to 125, -40 to 150 Supply voltage (Min) (V) 2 Interface type Pulse Count Supply voltage (Max) (V) 5.5 Supply current (Max) (uA) 39 Temp resolution (Max) (bits) 13 Remote channels (#) 0 Addresses NA Rating Automotive 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


  • AEC-Q100 Qualified With the Following Results:
    • Temperature Grade 0 (E): –40°C to +150°C (2)
    • Temperature Grade 1 (Q): –40°C to +125°C
    • HBM ESD Component Classification Level 2
    • CDM ESD Component Classification Level C5
  • High Accuracy Over –40°C to 150°C Wide Temperature Range
    • –20°C to 90°C: ±0.5°C (Maximum)
    • 90°C to 120°C: ±0.625°C (Maximum)
    • –40°C to –20°C: ±0.625°C (Maximum)
  • Precision Digital Temperature Measurement Simplified in a 2-Pin Package
  • Pulse Count Current Loop Easily Read by Processor. Pulse Count Proportional to Temperature With 0.0625°C Resolution
  • Communication Frequency: 88 kHz
  • Conversion Current: 34 µA
  • Continuous Temperature Update Every 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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The LMT01-Q1 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-Q1 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-Q1 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-Q1’s pulse count interface is designed to directly interface with a GPIO or comparator input, thereby simplifying hardware implementation. Similarly, the LMT01-Q1’s integrated EMI suppression and simple 2-pin architecture makes it suitable for onboard and offboard temperature sensing in a noisy environment. The LMT01-Q1 device can be easily converted into a two-wire temperature probe with a wire length up to two meters.

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Technical documentation

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Type Title Date
* Datasheet LMT01-Q1 0.5°C Accurate 2-Pin Digital Output Temperature Sensor With Pulse Count Interface datasheet (Rev. C) 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
Technical articles How sensor technology is evolving to meet cold chain needs Jun. 18, 2018

Design & development

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Reference designs

Automotive, mA-to-kA Range, Current Shunt Sensor Reference Design
TIDA-03050 — This reference design shows how to detect current from the mA-to-KA range using a busbar-type shunt resistor. The increasing demand of high-capacity batteries in electric vehicles (EVs) and hybrid electric vehicles (HEVs) drives the requirement for larger current spans and highly-accurate current (...)
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Automotive High Temperature Sensor (HTS) Reference Design
TIDA-01235 — The main focus of the TIDA-01235 reference design is to provide a high density, low cost, and good accuracy thermocouple analog front end. The protection strategies involved in the design protect the analog front end from coupling transients. This design meets the requirements of automotive-exhaust (...)
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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