LM74
- 0.0625°C Temperature Resolution
- Shutdown Mode Conserves Power Between Temperature Reading
- SPI and MICROWIRE Bus Interface
- 5-Bump DSBGA Package Saves Space
Key Specifications
- Supply Voltage 3.0V or 2.65V to 5.5V
- Supply
Current
- Operating265μA (typ)520μA (max)
- Shutdown3μA (typ)
- Temperature
Accuracy
- −10°C to 65°C, ±1.25°C(max)
- −25°C to 110°C, ±2.1°C(max)
- −55°C to 125°C, ±3°C(max)
All trademarks are the property of their respective owners.
The LM74 is a temperature sensor, Delta-Sigma analog-to-digital converter with an SPI and MICROWIRE compatible interface. The host can query the LM74 at any time to read temperature. A shutdown mode decreases power consumption to less than 10 μA. This mode is useful in systems where low average power consumption is critical.
The LM74 has 12-bit plus sign temperature resolution (0.0625°C per LSB) while operating over a temperature range of −55°C to +150°C.
The LM74's 3.0V to 5.5V supply voltage range, low supply current and simple SPI interface make it ideal for a wide range of applications. These include thermal management and protection applications in hard disk drives, printers, electronic test equipment, and office electronics. The LM74 is available in the SOIC package as well as the 5-Bump DSBGA package.
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 | LM74 SPI/ MICROWIRE 12-Bit Plus Sign Temperature Sensor 数据表 (Rev. K) | 2013-3-22 | |||
| 应用手册 | AN-1256 Tiny Temperature Sensors for Portable Systems (Rev. A) | 2013-4-26 | ||||
| 应用手册 | Tiny Temperature Sensors for Remote Systems | 2003-2-17 |
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）。
LM70SW-LINUX — 用于 LM70 的 Linux 驱动程序
Linux 驱动程序支持 LM70 系列温度传感器。Linux 驱动程序支持通过 SPI 总线和接口与硬件监测子系统进行通信。
Linux 主线状态在 Linux 主线中提供：是
可通过 git.ti.com 获取：不适用
- lm70
- tmp121
- lm71
- lm74
与该器件关联的文件为：
- drivers/hwmon/lm70.c
- Documentation/hwmon/lm70
启用驱动程序支持
使用“make (...)
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| DSBGA (YTA) | 5 | Ultra Librarian |