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TMP121-EP
  • TMP121-EP

TMP121-EP

ACTIVE

Enhanced product, 1.5°C 2.7V to 5.5V digital temperature sensor with SPI interface in SOT-23<

Texas Instruments TMP121-EP Product Info

1 April 2026 3

Parameters

Local sensor accuracy (max)

1.5

Type

Local

Operating temperature range (°C)

-40 to 125

Supply voltage (min) (V)

2.7

Interface type

SPI

Supply voltage (max) (V)

5.5

Supply current (max) (µA)

50

Temp resolution (max) (bps)

12

Remote channels (#)

0

Rating

HiRel Enhanced Product

Package

SOT-23 (DBV)-6-8.12 mm² 2.9 x 2.8

Features

  • Controlled Baseline
    • One Assembly/Test Site, One Fabrication Site
  • Extended Temperature Performance of -40°C to 125°C
  • Enhanced Diminishing Manufacturing Sources (DMS) Support
  • Enhanced Product-Change Notification
  • Qualification Pedigree
  • Digital Output: SPI-Compatible Interface
  • Resolution: 12-Bit + Sign, 0.0625°C
  • Accuracy: ±1.5°C from -25°C to 85°C (max)
  • Low Quiescent Current: 50 µA (max)
  • Wide Supply Range: 2.7 V to 5.5 V
  • Tiny SOT23-6 Package
  • Operation to 150°C
  • APPLICATIONS
    • Power-Supply Temperature Monitoring
    • Computer Peripheral Thermal Protection
    • Notebook Computers
    • Battery Management
    • Environmental Monitoring

(1)Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specified
performance and environmental limits.

SPI is a trademark of Texas Instruments.

  • Controlled Baseline
    • One Assembly/Test Site, One Fabrication Site
  • Extended Temperature Performance of -40°C to 125°C
  • Enhanced Diminishing Manufacturing Sources (DMS) Support
  • Enhanced Product-Change Notification
  • Qualification Pedigree
  • Digital Output: SPI-Compatible Interface
  • Resolution: 12-Bit + Sign, 0.0625°C
  • Accuracy: ±1.5°C from -25°C to 85°C (max)
  • Low Quiescent Current: 50 µA (max)
  • Wide Supply Range: 2.7 V to 5.5 V
  • Tiny SOT23-6 Package
  • Operation to 150°C
  • APPLICATIONS
    • Power-Supply Temperature Monitoring
    • Computer Peripheral Thermal Protection
    • Notebook Computers
    • Battery Management
    • Environmental Monitoring

(1)Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specified
performance and environmental limits.

SPI is a trademark of Texas Instruments.

Description

The TMP121 and TMP123 are SPI-compatible temperature sensors available in the tiny SOT23-6 package. Requiring no external components, the TMP121 and TMP123 are capable of measuring temperatures within 2°C of accuracy over a temperature range of -40°C to 125°C. Low supply current and a supply range from 2.7 V to 5.5 V make the TMP121 and TMP123 excellent candidates for low-power applications.

The TMP121 and TMP123 are ideal for extended thermal measurement in a variety of communication, computer, consumer, environmental, industrial, and instrumentation applications.

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