Remote and Local Temperature Sensor with N-Factor and Series-R Correction in VSSOP-8


Product details


Local sensor accuracy (Max) (+/- C) 3 Type Remote Operating temperature range (C) -40 to 125 Supply voltage (Min) (V) 3 Interface type I2C, SMBus, 2-Wire Supply voltage (Max) (V) 5.5 Supply current (Max) (uA) 36 Temp resolution (Max) (bits) 12 Features ALERT Remote channels (#) 1 Addresses 1 Rating Catalog open-in-new Find other Digital temperature sensors

Package | Pins | Size

VSSOP (DGK) 8 15 mm² 3 x 4.9 open-in-new Find other Digital temperature sensors


  • ±1°C Remote Diode Sensor
  • ±3°C Local Temperature Sensor
  • Series Resistance Cancellation
  • THERM Flag Output
  • ALERT/THERM2 Flag Output
  • Programmable Over- and Undertemperature Limits
  • Programmable Resolution: 9- to 12-Bit
  • Diode Fault Detection
  • SMBus-Compatible
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The TMP401 is a remote temperature sensor monitor with a built-in local temperature sensor. The remote sensor is capable of monitoring the temperature of any external PN junction. Typical sense elements include low-cost NPN- or PNP-type transistors and diodes, or accessible thermal diodes integrated within microcontrollers, microprocessors, or field-programmable gate arrays (FPGAs).

The accuracy of the remote sensor is ±1°C for multiple IC manufacturers, with no calibration needed. The two-wire serial interface accepts SMBus write byte, read byte, send byte, and receive byte commands to program alarm thresholds and to read temperature data.

Features included in the TMP401 are series resistance cancellation, wide remote temperature measurement range (up to +150°C), diode fault detection, and temperature alert functions.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet TMP401 ±1°C Programmable, Remote and Local, Digital Out Temperature Sensor datasheet (Rev. B) Oct. 10, 2014
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 to select a temperature sensor probe Feb. 18, 2016

Design & development

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Software development

Linux Driver for TMP401
TMP401SW-LINUX The Linux driver supports the TMP401 series of Remote and Local Temp Sensors. The Linux driver supports communication through the I2C bus and interfaces with the Hardware Monitoring sub-system.
Linux Mainline Status

Available in Linux Main line: Yes
Available through N/A

Supported Devices:
  • (...)

Design tools & simulation

SBOM410A.ZIP (60 KB) - IBIS Model

CAD/CAE symbols

Package Pins Download
VSSOP (DGK) 8 View options

Ordering & quality

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