TMP121

ACTIVE

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

Top

Product details

Parameters

Local sensor accuracy (Max) (+/- C) 1.5 Type Local Operating temperature range (C) -40 to 125 Supply voltage (Min) (V) 2.7 Interface type SPI, Microwire Supply voltage (Max) (V) 5.5 Supply current (Max) (uA) 50 Temp resolution (Max) (bits) 12 Remote channels (#) 0 Addresses NA Rating Catalog open-in-new Find other Digital temperature sensors

Package | Pins | Size

SOT-23 (DBV) 6 5 mm² 2.9 x 1.6 open-in-new Find other Digital temperature sensors

Features

  • 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: 2.7V to 5.5V
  • TINY SOT23-6 PACKAGE
  • OPERATION TO 150°C
  • APPLICATIONS
    • POWER-SUPPLY TEMPERATURE MONITORING
    • COMPUTER PERIPHERAL THERMAL PROTECTION
    • NOTEBOOK COMPUTERS
    • CELL PHONES
    • BATTERY MANAGEMENT
    • OFFICE MACHINES

All other trademarks are the property of their respective owners.

open-in-new Find other Digital temperature sensors

Description

The TMP121 and TMP123 are SPI-compatible temperature sensors available in a 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 2.7V to 5.5V, 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.

open-in-new Find other Digital temperature sensors
Download

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 5
Type Title Date
* Datasheet TMP121, TMP123: 1.50C Accurate Digital Temperature Sensor with SPI Interface datasheet (Rev. C) Feb. 03, 2005
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

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

Software development

DRIVER OR LIBRARY Download
Linux Driver for LM70
LM70SW-LINUX The Linux driver supports the LM70 series of Temperature Sensors. The Linux driver supports communication through the SPI bus and interfaces with the Hardware Monitoring sub-system.
Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:
  • lm70
  • tmp121
  • lm71 (...)

Design tools & simulation

SIMULATION MODEL Download
SBOM878A.ZIP (68 KB) - IBIS Model

CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 6 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

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. ​​​​​​​​​​​​​​

Videos

Related videos