±0.3°C SPI temperature sensor with 175°C operation, CRC and slew-rate alert


Product details


Local sensor accuracy (Max) (+/- C) 0.3 Type Local Operating temperature range (C) -55 to 150, -55 to 175 Supply voltage (Min) (V) 1.62 Interface type SPI Supply voltage (Max) (V) 5.5 Supply current (Max) (uA) 5 Temp resolution (Max) (bits) 14 Features Slew Rate Warning, ALERT, NIST traceable, CRC, One-shot conversion Remote channels (#) 0 Addresses 1 Rating Catalog open-in-new Find other Digital temperature sensors

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SOT-SC70 (DCK) 6 4 mm² 2 x 2.1 open-in-new Find other Digital temperature sensors


  • High accuracy
    • ±0.3 °C (maximum) from –20 °C to 85 °C
    • ±0.4 °C (maximum) from –40 °C to 125 °C
    • ±0.5 °C (maximum) from –55 °C to 150 °C
    • ±1 °C (maximum) from 150 °C to 175 °C
  • Operating temperature range –55 °C to 175 °C
  • Supply range: 1.62 V to 5.5 V
  • Factory-calibrated
    • NIST traceability
  • Low power consumption
  • Programmable temperature alert limits
  • Temperature slew rate warning
  • Optional Cyclic Redundancy Check (CRC)
  • 3-wire SPI interface
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The TMP126 is a high 0.3 °C accuracy digital temperature that supports an ambient temperature range of –55 °C to 175 °C. The TMP126 features a 14-bit signed temperature resolution (0.03125 °C per LSB) while operating over a supply range of 1.62 V to 5.5 V. With a fast conversion rate, low supply current, and a simple 3-wire SPI compatible interface, the TMP126 is designed for a wide range of applications.

The TMP126 includes additional advanced features for increased reliability in harsh environments such as optional CRC checksum for data integrity, programmable alert limits, a temperature slew rate warning, and an enhanced operational temperature range. The device utilizes a NIST traceable factory calibration for guaranteed accuracy and comes in a small SOT package for close placement to heat sources along with fast response times.

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Technical documentation

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Type Title Date
* Data sheet TMP126 High-Accuracy, Low-Power SPI Temperature Sensor with 175 °C Operation, CRC and Slew Rate Alert datasheet Jul. 01, 2021
User guide TMP126EVM User's Guide May 05, 2021
Technical article How to choose the right thermistor for your temperature sensing application Feb. 13, 2020
Technical article How to enable thermal safety for automotive infotainment and cluster systems Oct. 15, 2019
Technical article Driving industrial innovation with small-size sensors Sep. 12, 2019
Technical article How to select a temperature sensor probe Feb. 18, 2016

Design & development

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Hardware development

document-generic User guide

The TMP126-Q1 is a high-accuracy, 0.5°C digital temperature sensor that supports an ambient temperature range of -55°C to 175°C. The TMP126-Q1 features a 14-bit signed temperature resolution (0.03125°C per LSB) while operating over a supply range of 1.62 V to 5.5 V. The device has (...)

  • Provided GUI for simple and fast setup
  • Perforated PCB (printed circuit board) allows sensor to be placed in user's system
  • Provides best temperature accuracy measurement with 0.03125°C resolution (14 bit)
  • GUI runs online or through desktop installation
  • Supported platforms: Web, Windows, Linux, OS X            

CAD/CAE symbols

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SC70 (DCK) 6 View options

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