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TMP126
  • TMP126
  • TMP126

TMP126

ACTIVE

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

Texas Instruments TMP126 Product Info

1 April 2026 4

Parameters

Local sensor accuracy (max)

0.3, 0.8

Type

Local

Operating temperature range (°C)

-55 to 175

Supply voltage (min) (V)

1.62

Interface type

SPI

Supply voltage (max) (V)

5.5

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

Package

SOT-SC70 (DCK)-6-4.2 mm² 2 x 2.1

Features

  • 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

Description

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.

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