產品詳細資料

Local sensor accuracy (max) 1 Type Remote Operating temperature range (°C) -40 to 125 Supply voltage (min) (V) 1.62 Interface type I2C, SMBus Supply voltage (max) (V) 5.5 Features ALERT Supply current (max) (µA) 35 Temp resolution (max) (bps) 11 Remote channels (#) 1 Addresses 1, 2 Rating Catalog
Local sensor accuracy (max) 1 Type Remote Operating temperature range (°C) -40 to 125 Supply voltage (min) (V) 1.62 Interface type I2C, SMBus Supply voltage (max) (V) 5.5 Features ALERT Supply current (max) (µA) 35 Temp resolution (max) (bps) 11 Remote channels (#) 1 Addresses 1, 2 Rating Catalog
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Supply range: 1.62 V to 5.5 V
  • Wide operating range: –40°C to 125°C
  • Remote channel accuracy: 1°C
    • Resolution: 0.125°C
  • Local channel accuracy: 1°C
    • Resolution: 1°C
  • Support I 2C and SMBus interface
  • Low power consumption
  • Remote diode fault detection
  • Programmable digital filter
  • Series resistance cancellation
  • Programmable ALERT and T_CRIT limits
    • Fault queue for debounce
  • Adjustable default power-up limits (high temperature) for ALERT and T_CRIT
  • 1.2-V logic compatible input thresholds independent of supply
  • Supply range: 1.62 V to 5.5 V
  • Wide operating range: –40°C to 125°C
  • Remote channel accuracy: 1°C
    • Resolution: 0.125°C
  • Local channel accuracy: 1°C
    • Resolution: 1°C
  • Support I 2C and SMBus interface
  • Low power consumption
  • Remote diode fault detection
  • Programmable digital filter
  • Series resistance cancellation
  • Programmable ALERT and T_CRIT limits
    • Fault queue for debounce
  • Adjustable default power-up limits (high temperature) for ALERT and T_CRIT
  • 1.2-V logic compatible input thresholds independent of supply

The TMP4718 is a high accuracy 1°C temperature sensor with one local integrated sensor and a remote temperature sensor input that can be connected to a diode-connected transistor, such as the popular MMBT3904 NPN transistor, to replace traditional thermistors or thermocouples. The remote input can also be connected to a substrate thermal transistor or diode integrated inside microprocessors, microcontrollers, or FPGAs to monitor the die temperature of the IC.

The TMP4718 supports I2C and SMBus communication with logic levels down to 0.8V regardless of main supply rail. This enables interoperability with low voltage 1.2V MCUs without needing a secondary low voltage supply. The TMP4718 includes the Series Resistance Cancellation feature to automatically eliminate temperature errors caused by series resistance of up to 1 kΩ, allowing for greater flexibility routing to thermal diodes. The programmable offset feature allows the device to report offset-adjusted temperature data based on pre-calibrated data in specific user environments. Measurements can be done automatically with programmable conversion period, or with one-shot conversion triggered by an I 2C command.

The TMP4718A and TMP4718B offer the same function but different SMBus or I 2C device addresses. This allows the system to support two sensors on the same bus.

The TMP4718 is a high accuracy 1°C temperature sensor with one local integrated sensor and a remote temperature sensor input that can be connected to a diode-connected transistor, such as the popular MMBT3904 NPN transistor, to replace traditional thermistors or thermocouples. The remote input can also be connected to a substrate thermal transistor or diode integrated inside microprocessors, microcontrollers, or FPGAs to monitor the die temperature of the IC.

The TMP4718 supports I2C and SMBus communication with logic levels down to 0.8V regardless of main supply rail. This enables interoperability with low voltage 1.2V MCUs without needing a secondary low voltage supply. The TMP4718 includes the Series Resistance Cancellation feature to automatically eliminate temperature errors caused by series resistance of up to 1 kΩ, allowing for greater flexibility routing to thermal diodes. The programmable offset feature allows the device to report offset-adjusted temperature data based on pre-calibrated data in specific user environments. Measurements can be done automatically with programmable conversion period, or with one-shot conversion triggered by an I 2C command.

The TMP4718A and TMP4718B offer the same function but different SMBus or I 2C device addresses. This allows the system to support two sensors on the same bus.

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類型 標題 日期
* Data sheet TMP4718 High-Accuracy Remote and Local Temperature Sensor with Pin-Programmable Alert Thresholds datasheet (Rev. A) PDF | HTML 2023年 9月 26日
Application note How to Read and Interpret Digital Temperature Sensor Output Data (Rev. A) PDF | HTML 2025年 1月 21日
Application note Remote Temperature Transistor Sensor Selection Guide PDF | HTML 2021年 3月 24日
Application note Optimizing Remote Diode Temperature Sensor Design (Rev. A) 2019年 12月 18日

設計與開發

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開發板

TMP4718EVM — 適用遠端與本機溫度感測器的 TMP4718 評估電路板

TMP4718EVM 評估模組 (EVM) 可讓使用者評估 TMP4718 高準確度遠端與本機溫度感測器的性能。EVM 採用 USB 隨身碟型式,配備板載 MSP430F5526 微控制器與使用 I²C 介面的主機和 TMP4718 裝置介接。模組在 EVM 電路板上感測器與主機控制器間設計穿孔。穿孔讓使用者能夠靈活地進行評估。
使用指南: PDF | HTML
開發板

MIKRO-3P-TMP-I2C-CLICK — 適用於具有 I2C 溫度感測器的 MikroElektronika mikroBUS 快速原型 Click 板

The TMP-I2C-CLICK family of MikroE Click board™ products are compact add-on boards that accurately measure temperature. These boards feature the digital temperatures with an I2C interface for communicating with a host processor. Each temperature sensor selected has a specified resolution (accuracy) (...)

模擬型號

TMP4718 IBIS Model

SBOMCJ6.ZIP (70 KB) - IBIS Model
封裝 針腳 CAD 符號、佔位空間與 3D 模型
VSSOP (DGK) 8 Ultra Librarian

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  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊:
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