LM95245
- Remote and Local Temperature Channels
- Targeted for Intel 45nm Processor Diodes
- Two Formats: −128°C to +127.875°C and 0°C to 255.875°C
- Digital Filter for Remote Channel
- Programmable TCRIT and OS Thresholds
- Programmable Shared Hysteresis Register
- Diode Fault Detection
- Mask, Offset, and Status Registers
- SMBus 2.0 Compatible Interface, Supports TIMEOUT
- Programmable Conversion Rate for Best Power Consumption
- Three-Level Address Pin
- Standby Mode One-Shot Conversion Control
- Pin-for-Pin Compatible With the LM95235 and LM86, LM89, LM99
- 8-Pin VSSOP and SOIC Packages
Key Specifications
- Supply Voltage 3.0 to 3.6 V
- Supply Current, Conv. Rate = 1 Hz 350 µA (typ)
- Remote Diode Temperature
Accuracy
- TA = 25°C to 85°C; TD = 50°C to 105°C, ±0.75 °C (max)
- TA = 25°C to 85°C; TD = 40°C to 125°C, ±1.5 °C (max)
- Local Temperature
Accuracy
- TA = 25°C to 100°C, ±2.0 °C (max)
- Conversion Rate, Both Channels 16 to 0.4 Hz
All trademarks are the property of their respective owners.
The LM95245 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) interface and TruTherm technology that can monitor the temperature of a remote diode as well as its own temperature. The LM95245 can be used to very accurately monitor the temperature of external devices such as microprocessors. TruTherm technology allows the LM95245 to precisely monitor thermal diodes found in 90 nm and smaller geometry processes. The LM95245 is specifically targeted for Intel processors on 45nm process. LM95245 reports temperature in two different formats for +127.875°C/-128°C range and 0°C/255°C range. The LM95245 T_CRIT and OS outputs are asserted when either unmasked channel exceeds its programmed limit and can be used to shutdown the system, to turn on the system fans, or as a microcontroller interrupt function. The current status of the T_CRIT and OS pins can be read back from the status registers via the SMBus interface. All limits have a shared programmable hysteresis register.
The remote temperature channel of the LM95245 has a programmable digital filter. The LM95245 is targeted for a typical Intel® processor on a 45 nm, 65 nm or 90nm process, and has an offset register for maximum flexibility and best accuracy.
The LM95245 has a three-level address pin to connect up to 3 devices to the same SMBus master, that is shared with the OS output. The LM95245 has a programmable conversion rate register and a standby mode to save power. One conversion can be triggered in standby mode by writing to the one-shot register.
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 | Precision Diode Digital Temp Sensor w/TruTherm BJT Comp Tech for 45nm Process datasheet (Rev. G) | 2013/3/22 |
設計與開發
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LM95245SW-LINUX — 適用於 LM95245 的 Linux 驅動程式
The Linux driver supports the LM95245 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 StatusAvailable in Linux Main line: Yes
Available through git.ti.com: N/A
- (...)
SENSOREVAL — Eval Board Software For Hardware Monitors And Digital Temperature Sensors
SensorEval
SensorEval software supports the latest TI temperature sensor and hardware monitor evaluation boards via USB interface. It also allows access to sensors mounted directly on motherboards that support Intel chip sets.
- Download SensorEval Software and Manual
- Windows XP support is offered for (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| VSSOP (DGK) | 8 | Ultra Librarian |