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数字温度传感器

LM89

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具有 SMBus 接口和 2 个地址用于总线共享的 ±0.75°C 远程和本地温度传感器

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LM89

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产品详情

Local sensor accuracy (max) 3 Type Remote Operating temperature range (°C) 0 to 125 Supply voltage (min) (V) 3 Interface type I2C, SMBus Supply voltage (max) (V) 3.6 Features ALERT Supply current (max) (µA) 1700 Temp resolution (max) (bps) 8 Remote channels (#) 1 Addresses 2 Rating Catalog
Local sensor accuracy (max) 3 Type Remote Operating temperature range (°C) 0 to 125 Supply voltage (min) (V) 3 Interface type I2C, SMBus Supply voltage (max) (V) 3.6 Features ALERT Supply current (max) (µA) 1700 Temp resolution (max) (bps) 8 Remote channels (#) 1 Addresses 2 Rating Catalog
SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • 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)
  • 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. LM89-1D’s default local T_CRIT temperature limit is 105°C; all other versions are 85°C.

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. LM89-1D’s default local T_CRIT temperature limit is 105°C; all other versions are 85°C.
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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 LM89 ±0.75°C Accurate, Remote Diode And Local Digital Temperature Sensor With Two-Wire Interface 数据表 (Rev. D) PDF | HTML 2014年 6月 23日
用户指南 LM86, LM89, LM89-1, LM90, LM99, LM99-1 Evaluation Board User’s Guide 2012年 2月 29日

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）。

驱动程序或库

LM90SW-LINUX — 用于 LM90 的 Linux 驱动程序

The Linux driver supports the LM90 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 Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:

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支持软件

DIGITALTEMPSENSORSEVM-SW — Eval Board Software for Hardware Monitors and Digital Temp Sensors

Evaluation Board Software for Hardware Monitors and Digital Temperature Sensors
支持的产品和硬件

支持的产品和硬件
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支持软件

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 (...)
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封装 引脚 CAD 符号、封装和 3D 模型
SOIC (D) 8 Ultra Librarian
VSSOP (DGK) 8 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

支持和培训

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