Home Sensors Temperature sensors Digital temperature sensors
Home
Sensors
Temperature sensors
Digital temperature sensors

TMP126

ACTIVE

±0.25°C SPI temperature sensor with 175°C operation, CRC and slew-rate alert

Order now
Data sheet

TMP126

ACTIVE
Data sheet Order now

Product details

Local sensor accuracy (max) 0.25, 0.3, 0.8 Type Local Operating temperature range (°C) -55 to 175 Interface type SPI Features ALERT, CRC, NIST traceable, One-shot conversion, Slew Rate Warning Supply current (max) (µA) 1.2 Temp resolution (max) (bps) 14 Remote channels (#) 0 Addresses 1 Rating Catalog
Local sensor accuracy (max) 0.25, 0.3, 0.8 Type Local Operating temperature range (°C) -55 to 175 Interface type SPI Features ALERT, CRC, NIST traceable, One-shot conversion, Slew Rate Warning Supply current (max) (µA) 1.2 Temp resolution (max) (bps) 14 Remote channels (#) 0 Addresses 1 Rating Catalog
SOT-SC70 (DCK) 6 4.2 mm² (2 mm × 2.1 mm)
  • High accuracy
    • TMP126:
      • ±0.25°C (maximum) from 20°C to 30°C
      • ±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
      • ±0.75°C (maximum) from 150°C to 175°C
    • TMP126N:
      • ±0.8°C (maximum) from –40°C to 150°C
  • Fast measurement intervals with no self-heating concerns
  • Operating temperature range:
    • TMP126: –55°C to 175°C

    • TMP126N: –40°C to 150°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
  • High accuracy
    • TMP126:
      • ±0.25°C (maximum) from 20°C to 30°C
      • ±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
      • ±0.75°C (maximum) from 150°C to 175°C
    • TMP126N:
      • ±0.8°C (maximum) from –40°C to 150°C
  • Fast measurement intervals with no self-heating concerns
  • Operating temperature range:
    • TMP126: –55°C to 175°C

    • TMP126N: –40°C to 150°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

The TMP126 is a 0.25°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.

The TMP126 is a 0.25°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.
filter Find other Digital temperature sensors
Download View video with transcript Video

Request more information

NIST calibration documentation is available. Request now

Technical documentation

No results found. Please clear your search and try again.
View all 8
Top documentation Type Title Format options Date
* Data sheet TMP126 Low-Power, 0.25°C SPI Temperature Sensor With 175°C Operation, CRC and Slew Rate Alert datasheet (Rev. C) PDF | HTML Jun 3, 2022
Application note How to Design Alert Overtemperature and Undertemperature Systems PDF | HTML Mar 9, 2026
Application note A Simple, Java-Based CRC Calculator PDF | HTML Mar 4, 2026
Product overview NIST Traceability for Temperature and Humidity Sensors PDF | HTML Apr 15, 2025
Application note How to Read and Interpret Digital Temperature Sensor Output Data (Rev. A) PDF | HTML Jan 21, 2025
Certificate TMP126EVM EU RoHS Declaration of Conformity (DoC) Feb 6, 2023
Application brief Improving System Reliability in Auto and Ind. Cameras w/ AccurateTemp. Sensing PDF | HTML Jan 3, 2022
Application note Temperature Slew Rate Warning Overview PDF | HTML Nov 9, 2021

Design & development

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

Evaluation board

TMP126EVM — TMP126 evaluation module for high-precision SPI temperature sensors

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 (...)

User guide: PDF | HTML
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
SOT-SC70 (DCK) 6 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Video series

View all videos

Videos