LM95241
- Accurately Senses Die Temperature of Remote ICs or Diode Junctions
- Uses TruTherm Technology for Precision “Thermal Diode” Temperature Measurement
- Thermal Diode Input Stage with Analog Filtering
- Thermal Diode Digital Filtering
- Intel Processor on 65nm or 90nm Process or 2N3904 Non-Ideality Selection
- Remote Diode Fault Detection
- On-board Local Temperature Sensing
- Remote
Temperature Readings Without Digital Filtering:
- 0.125 °C LSb
- 10-bits Plus Sign or 11-bits Programmable Resolution
- 11-bits Resolves Temperatures Above
127 °C
- Remote Temperature Readings with
Digital Filtering:
- 0.03125 °C LSb with Filtering
- 12-bits Plus Sign or 13-bits Programmable Resolution
- 13-bits Resolves Temperatures
Above
127 °C
- Local Temperature
Readings:
- 0.25 °C
- 9-bits Plus Sign
- Status Register Support
- Programmable Conversion Rate Allows User Optimization of Power Consumption
- Shutdown Mode One-shot Conversion Control
- SMBus 2.0 Compatible Interface, Supports TIMEOUT
- 8-pin VSSOP Package
Key Specifications
- Remote Diode Temperature
Accuracy
- TA = 20°C to 40°C, TD = 45°C to 85°C ±1.25 °C (Max)
- TA = 0°C to 85°C, TD = 25°C to 140°C ±2.5 °C (Max)
- Local Temperature
Accuracy
- TA = 0°C to 85°C ±3.0 °C (Max)
- Supply Voltage 3.0 V to 3.6 V
- Average Supply Current 471 μA (Typ)
All trademarks are the property of their respective owners.
The LM95241 is a precision dual remote diode temperature sensor (RDTS) that uses TI's TruTherm technology. The 2-wire serial interface of the LM95241 is compatible with SMBus 2.0. The LM95241 can sense three temperature zones, it can measure the temperature of its own die as well as two diode connected transistors. The LM95241 includes digital filtering and an advanced input stage that includes analog filtering and TruTherm technology that reduces processor-to-processor non-ideality spread. The diode connected transistors can be a “thermal diode” as found in Intel and AMD processors or can simply be a diode connected MMBT3904 transistor. TruTherm technology allows accurate measurement of “thermal diodes” found on small geometry processes such as 90nm and 65nm. The LM95241 supports user selectable thermal diode non-ideality of either Intel processor on 90nm or 65nm process or 2N3904.
The LM95241 resolution format for remote temperature readings can be programmed to be 11-bits signed or unsigned with the digital filtering disabled. When the filtering is enabled the resolution increases to 13-bits signed or unsigned. In the unsigned mode the LM95241 remote diode readings can resolve temperatures above 127°C. Local temperature readings have a resolution of 9-bits plus sign.
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 | LM95241 Dual Remote Diode Temp Sensor w/SMBus Interface & TruTherm Technology 数据表 (Rev. E) | 2013-3-22 |
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）。
LM95241SW-LINUX — 用于 LM95241 的 Linux 驱动程序
Linux 驱动程序支持 LM95241 系列双路远程和本地温度传感器。Linux 驱动程序支持通过 I2C 总线进行通信，并可与硬件监测子系统接口连接。
Linux 主线状态在 Linux 主线中提供：是
可通过 git.ti.com 获取：不适用
- lm95231
- lm95241
与该器件关联的文件为：
- drivers/hwmon/lm95241.c
启用驱动程序支持
使用“make menuconfig”（也可以使用“make xconfig”或“make nconfig”）配置内核
Menuconfig 位置
(...)
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 |
|---|---|---|
| VSSOP (DGK) | 8 | Ultra Librarian |