TMP451
- ±1°C Accuracy for Local and Remote Diode Sensors
- 0.0625°C Resolution for Local and Remote Channels
- 1.7-V to 3.6-V Supply and Logic Voltage Range
- 27-µA Operating Current, 3-µA Shutdown Current
- Series Resistance Cancellation
- η-Factor and Offset Correction
- Programmable Digital Filter
- Diode Fault Detection
- Two-Wire and SMBus™ Serial Interface
- 8-Lead WSON (WDFN) Package
The TMP451 device is a high-accuracy, low-power remote temperature sensor monitor with a built-in local temperature sensor. The remote temperature sensors are typically low-cost discrete NPN or PNP transistors, or substrate thermal transistors or diodes that are integral parts of microprocessors, microcontrollers, or FPGAs. The temperature is represented as a 12-bit digital code for both the local and remote sensors, giving a resolution of 0.0625°C. The temperature accuracy is ±1°C (maximum) in the typical operating range for the local and the remote temperature sensors. The two-wire serial interface accepts the SMBus communication protocol.
Advanced features such as series resistance cancellation, programmable nonideality factor (η-factor), programmable offset, programmable temperature limits, and a programmable digital filter are combined to provide a robust thermal monitoring solution with improved accuracy and noise immunity.
The TMP451 device is ideal for high-accuracy temperature measurements in multiple locations and in a variety of automotive subsystems. The device is specified for operation over a supply voltage range of 1.7 V to 3.6 V and a temperature range of –40°C to 125°C.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | TMP451 ±1°C Remote and Local Temperature Sensor With η-Factor and Offset Correction, Series-Resistance Cancellation, and Programmable Digital Filter datasheet (Rev. A) | PDF | HTML | 2014/9/29 | ||
| 應用說明 | How to Read and Interpret Digital Temperature Sensor Output Data (Rev. A) | PDF | HTML | 2025/1/21 | |||
| Application brief | Improving System Reliability in Auto and Ind. Cameras w/ AccurateTemp. Sensing | PDF | HTML | 2022/1/3 | |||
| 應用說明 | Remote Temperature Transistor Sensor Selection Guide | PDF | HTML | 2021/3/24 | |||
| 應用說明 | Optimizing Remote Diode Temperature Sensor Design (Rev. A) | 2019/12/18 | ||||
| Application brief | High-Performance Processor Die Temperature Monitoring (Rev. A) | 2019/10/17 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
TMP451EVM — TMP451 1.7-V 遠端與本機溫度感測器評估模組
LM90SW-LINUX — 適用於 LM90 的 Linux 驅動程式
The Linux driver supports the LM90 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 git.ti.com: N/A
Supported Devices:
- (...)
SBOC436 — TMP451EVM Software
SBOC437 — TMP451EVM Source Code
SBOC594 — Remote Temperature Sensor Calibration Tool
TIDA-00737 — 適用於自動功率因數控制器的電容組控制和 HMI 子系統參考設計
此參考設計展示了 MV/LV 配電中使用的各種自動功率因數控制器 (PFC) 功能區塊運作。其中包括準確的電壓、電流、功率和功率因數測量與運算、使用四位數七段顯示器顯示測量參數、使用 LED 顯示警報和狀態指示、切換用於驅動接觸器或閘流管以切換電容器組的切換輸出，以及使用我們產品組合中的各種產品監控本機和遠端溫度。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DQF) | 8 | Ultra Librarian |