TMP442 datasheet(11/63 Pages) TI2

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7 Detailed Description

7.1 Overview

The TMP4719 is a digital temperature sensor that combines a local temperature measurement channel and

2 remote-junction temperature measurement channels in a single 10-pin package. The device is I2C and

SMBus compatible and is specified over a temperature range of –40°C to 125°C. The device supports various

features to improve the noise immunity of the device and provide a robust design for complex thermal

environment monitoring applications, including series resistance cancellation, programmable ideality factor (η-

factor), programmable temperature limits, and programmable digital filters. The device supports I2C and SMBus

communication with logic levels down to 1.2V regardless of the main supply rail, enabling interoperability with

low-voltage MCUs without needing a secondary low-voltage supply.

7.2 Functional Block Diagram

V+

SDA

Control Logic

Oscillator

Internal

thermal

BJT

ALERT

SCL

Serial Interface

GND

ADC

Bank

V+

6 * ID

16 * ID

V+

T_CRIT

DP1/ DN1

DP2/ DN2

Figure 7-1. Functional Block Diagram

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TMP4719

SBOSAJ7A – OCTOBER 2025 – REVISED DECEMBER 2025

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TMP442 Datasheet(PDF) 11 Page - Texas Instruments