产品详细信息

Local sensor accuracy (Max) (+/- C) 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 Supply current (Max) (uA) 1700 Temp resolution (Max) (bits) 8 Features ALERT Remote channels (#) 1 Addresses 2 Rating Catalog
Local sensor accuracy (Max) (+/- C) 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 Supply current (Max) (uA) 1700 Temp resolution (Max) (bits) 8 Features ALERT Remote channels (#) 1 Addresses 2 Rating Catalog
SOIC (D) 8 19 mm² 4.9 x 3.9 VSSOP (DGK) 8 15 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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技术文档

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类型 项目标题 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 23 Jun 2014
技术文章 How to choose the right thermistor for your temperature sensing application 13 Feb 2020
技术文章 How to enable thermal safety for automotive infotainment and cluster systems 15 Oct 2019
技术文章 Driving industrial innovation with small-size sensors 12 Sep 2019
技术文章 How to select a temperature sensor probe 18 Feb 2016
用户指南 LM86, LM89, LM89-1, LM90, LM99, LM99-1 Evaluation Board User’s Guide 29 Feb 2012

设计和开发

如需其他信息或资源,请查看下方列表,点击标题即可进入详情页面。

驱动程序或库

DIGITALTEMPSENSORSEVM-SW — 用于硬件监控器和数字温度传感器的评估板软件

Evaluation Board Software for Hardware Monitors and Digital Temperature Sensors
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:

  • (...)
驱动程序或库

SENSOREVAL — 用于硬件监控器和数字温度传感器的评估板软件

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 引脚数 下载
SOIC (D) 8 了解详情
VSSOP (DGK) 8 了解详情

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
  • 认证摘要
  • 持续可靠性监测

支持与培训

视频