LM89
- Accurately Senses Die Temperature of Remote ICs
or Diode Junctions - Offset Register Allows Accurate Sensing of a Variety
of Thermal Diodes - On-Board Local Temperature Sensing
- 10-Bit Plus Sign Remote Diode Temperature Data Format,
0.125°C Resolution - T_CRIT_A Output Useful for System Shutdown
- ALERT Output Supports SMBus 2.0 Protocol
- SMBus 2.0 Compatible Interface, Supports TIMEOUT
- 8-Pin VSSOP and SOIC Packages
- Key Specifications:
- Supply Voltage: 3.0 V to 3.6 V
- Local Temp Accuracy (includes quantization error)
- TA = 25°C to 125°C ±3.0 °C (max)
- Remote Diode Temp Accuracy (includes quantization error)
- TA = 30°C, TD = 80°C ±0.75 °C (max)
The LM89 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) serial interface. The LM89 accurately measures its own temperature as well as the temperature of an external device, such as processor thermal diode or diode-connected transistor such as the 2N3904. The temperature of any ASIC, GPU, FPGA or MCU can be accurately determined using the LM89 as long as a dedicated diode (semiconductor junction) is available on the target die. The LM89 has an Offset register to allow calibration for different nonideality factors without requiring software management.
Activation of the ALERT occurs when any temperature goes outside a preprogrammed window set by the HIGH and LOW limit registers or exceeds the T_CRIT limit. Activation of the T_CRIT_A occurs when any temperature exceeds the T_CRIT programmed limit.
The LM89 is pin and register compatible with the LM86, LM90, LM99, On Semiconductor ADM1032 and Maxim MAX6657/8.
The LM89C and the LM89-1C have the same functions but different SMBus slave addresses, allowing multiple LM89's on a bus. LM89-1Ds default local T_CRIT temperature limit is 105°C; all other versions are 85°C.
技術(shù)文檔
| 類型 | 標(biāo)題 | 下載最新的英語版本 | 日期 | |||
|---|---|---|---|---|---|---|
| * | 數(shù)據(jù)表 | LM89 ±0.75°C Accurate, Remote Diode And Local Digital Temperature Sensor With Two-Wire Interface 數(shù)據(jù)表 (Rev. D) | PDF | HTML | 2014年 6月 23日 | ||
| 用戶指南 | LM86, LM89, LM89-1, LM90, LM99, LM99-1 Evaluation Board User’s Guide | 2012年 2月 29日 |
設(shè)計(jì)和開發(fā)
如需其他信息或資源,請點(diǎn)擊以下任一標(biāo)題進(jìn)入詳情頁面查看(如有)。
LM90SW-LINUX — 用于 LM90 的 Linux 驅(qū)動程序
Linux Mainline Status
Available in Linux Main line: Yes
Available through git.ti.com: N/A
Supported Devices:
- (...)
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 (...)
支持的產(chǎn)品和硬件
產(chǎn)品
數(shù)字溫度傳感器
精密 ADC
| 封裝 | 引腳 | CAD 符號、封裝和 3D 模型 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| VSSOP (DGK) | 8 | Ultra Librarian |
訂購和質(zhì)量
- RoHS
- REACH
- 器件標(biāo)識
- 引腳鍍層/焊球材料
- MSL 等級/回流焊峰值溫度
- MTBF/時基故障估算
- 材料成分
- 鑒定摘要
- 持續(xù)可靠性監(jiān)測
- 制造廠地點(diǎn)
- 封裝廠地點(diǎn)