LM73
- Single Address Pin Offers Choice of Three
Selectable Addresses Per Version for a Total of
Six Possible Addresses. - SMBus and I2C-compatible Two-Wire Interface
- Supports 400-Khz Operation
- Shutdown Mode With One-shot Feature Available
for Very Low Average Power Consumption - Programmable Digital Temperature Resolution
From 11 Bits to 14 Bits - Fast Conversion Rate Ideal for Quick Power Up
and Measuring Rapidly Changing Temperature - Open-Drain ALERT Output Pin Goes Active When
Temperature is Above a Programmed
Temperature Limit - Very Stable, Low-noise Digital Output
- UL Recognized Component
- Key Specifications
- Supply Current
- Operating
- 320 µA (Typical)
- 495 µA (Maximum)
- Shutdown
- 8 µA (Maximum)
- 1.9 µA (Typical)
- Operating
- Temperature Accuracy
- −10°C to 80°C: ±1.0°C (Maximum)
- −25°C to 115°C: ±1.5°C (Maximum)
- −40°C to 150°C: ±2°C (Maximum)
- Resolution
- 0.25°C to 0.03125°C
- Conversion Time
- 11-Bit (0.25°C): 14 ms (Maximum)
- 14-Bit (0.03125°C): 112 ms (Maximum)
- Supply Current
The LM73 is an integrated, digital-output temperature sensor featuring an incremental Delta-Sigma ADC with a two-wire interface that is compatible with the SMBus and I2C interfaces. The host can query the LM73 at any time to read temperature.
Available in a 6-pin SOT package, the LM73 occupies very little board area while operating over a wide temperature range (–40°C to 150°C) and providing ±1°C accuracy from –10°C to 80°C. The user can optimize between the conversion time and the sensitivity of the LM73 by programming it to report temperature in any of four different resolutions. Defaulting to 11-bit mode (0.25°C/LSB), the LM73 measures temperature in a maximum time of 14 ms, making it ideal for applications that require temperature data very soon after power-up. In its maximum resolution, 14-bit mode (0.03125°C/LSB), the LM73 is optimized to sense very small changes in temperature.
A single multi-level address line selects one of three unique device addresses. An open-drain ALERT output goes active when the temperature exceeds a programmable limit. Both the data and clock lines are filtered for excellent noise tolerance and reliable communication. Additionally, a time-out feature on the clock and data lines causes the LM73 to automatically reset these lines if either is held low for an extended time, thus exiting any bus lock-up condition without processor intervention.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | LM73 2.7-V, SOT-23, 11- to 14-Bit Digital Temperature Sensor With 2-Wire Interface 数据表 (Rev. F) | PDF | HTML | 2015-10-29 | ||
| 应用手册 | 如何读取和解释数字温度传感器输出数据 (Rev. A) | PDF | HTML | 英语版 (Rev.A) | PDF | HTML | 2025-1-29 | |
| 证书 | UL Certificate of Compliance Vol1-Sec6 E232195 | 2018-8-9 | ||||
| 应用手册 | Applying I2C-Compatible Temperature Sensors in Systems With Slow Clock Edges (Rev. A) | 2013-5-6 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
LM73SW-LINUX — 用于 LM73 的 Linux 驱动程序
The Linux driver supports the LM73 Temperature Sensor. 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:
- lm73
Linux Source Files
(...)
DIGITALTEMPSENSORSEVM-SW — Eval Board Software for Hardware Monitors and Digital Temp Sensors
SENSOREVAL — Eval Board Software For Hardware Monitors And Digital Temperature Sensors
SensorEval
SensorEval 软件支持通过 USB 接口连接的 TI 最新温度传感器和硬件监控器评估板。此外，该软件还允许访问直接安装在支持 Intel 芯片组的主板上的传感器。
- 下载 SensorEval 软件和手册
- 为以下各项提供 Windows XP 支持：
- USB 评估板（LM93 除外）
- Intel ICHx 接口（ADCS9888、LM32、LM40、LM41、LM71、LM95010 和 LM95071 除外）
- “无硬件”模式支持在没有任何硬件的情况下运行软件
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOT-23-THN (DDC) | 6 | Ultra Librarian |