產品詳情

Local sensor accuracy (max) 4 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 1 Rating Catalog
Local sensor accuracy (max) 4 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 1 Rating Catalog
VSSOP (DGK) 8 14.7 mm2 3 x 4.9
  • Accurately Senses Die Temperature of Remote ICs or Diode Junctions
  • Offset Register Allows Sensing a Variety of Thermal Diodes Accurately
  • On-board Local Temperature Sensing
  • 10 Bit Plus Sign Remote Diode Temperature Data Format, 0.125°C Resolution
  • Diode Fault Detection Circuitry
  • T_CRIT_A Output Useful for System Shutdown (Open Diode does not Activate T_CRIT_A)
  • ALERT Output Supports SMBus 2.0 Protocol
  • SMBus 2.0 Compatible Interface, Supports TIMEOUT
  • 8-pin VSSOP Package

Key Specifications

  • Supply Voltage 3.0 to 3.6 V
  • Supply Current 0.8 mA (Typ)
  • Local Temp Accuracy (Includes Quantization Error)
    • TA=25°C to 125°C, ±4.0 °C (Max)
  • Remote Diode Temp Accuracy (Includes Quantization Error)
    • TA=30°C to 50°C, TD=60°C to 100°C, ±3.0 °C (Max)
    • TA=0°C to 85°C, TD=25°C to 125°C, ±4.0 °C (Max)
  • Accurately Senses Die Temperature of Remote ICs or Diode Junctions
  • Offset Register Allows Sensing a Variety of Thermal Diodes Accurately
  • On-board Local Temperature Sensing
  • 10 Bit Plus Sign Remote Diode Temperature Data Format, 0.125°C Resolution
  • Diode Fault Detection Circuitry
  • T_CRIT_A Output Useful for System Shutdown (Open Diode does not Activate T_CRIT_A)
  • ALERT Output Supports SMBus 2.0 Protocol
  • SMBus 2.0 Compatible Interface, Supports TIMEOUT
  • 8-pin VSSOP Package

Key Specifications

  • Supply Voltage 3.0 to 3.6 V
  • Supply Current 0.8 mA (Typ)
  • Local Temp Accuracy (Includes Quantization Error)
    • TA=25°C to 125°C, ±4.0 °C (Max)
  • Remote Diode Temp Accuracy (Includes Quantization Error)
    • TA=30°C to 50°C, TD=60°C to 100°C, ±3.0 °C (Max)
    • TA=0°C to 85°C, TD=25°C to 125°C, ±4.0 °C (Max)

The LM90 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) serial interface. The LM90 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 can be accurately determined using the LM90 as long as a dedicated diode (semiconductor junction) is available on the target die. The LM90 remote sensor accuracy of ±3°C is factory trimmed for the 1.008 typical non-ideality factor of the mobile Pentium III thermal diode. The LM90 has an Offset register to allow measuring other diodes without requiring continuous software management.

Activation of the ALERT output occurs when any temperature goes outside a preprogrammed window set by the HIGH and LOW temperature limit registers or exceeds the T_CRIT temperature limit. Activation of the T_CRIT_A occurs when any temperature exceeds the T_CRIT programmed limit. The LM90 is pin and register compatible with the LM86, Analog Devices ADM1032 and Maxim MAX6657/8.

The LM90 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) serial interface. The LM90 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 can be accurately determined using the LM90 as long as a dedicated diode (semiconductor junction) is available on the target die. The LM90 remote sensor accuracy of ±3°C is factory trimmed for the 1.008 typical non-ideality factor of the mobile Pentium III thermal diode. The LM90 has an Offset register to allow measuring other diodes without requiring continuous software management.

Activation of the ALERT output occurs when any temperature goes outside a preprogrammed window set by the HIGH and LOW temperature limit registers or exceeds the T_CRIT temperature limit. Activation of the T_CRIT_A occurs when any temperature exceeds the T_CRIT programmed limit. The LM90 is pin and register compatible with the LM86, Analog Devices ADM1032 and Maxim MAX6657/8.
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類型 標題 下載最新的英語版本 日期
* 數據表 LM90 +-;3C Accurate, Remote Diode & Local Dig Temp Sensor w/2-Wire Interface 數據表 (Rev. A) 2013年 3月 25日
用戶指南 LM86, LM89, LM89-1, LM90, LM99, LM99-1 Evaluation Board User’s Guide 2012年 2月 29日

設計和開發

如需其他信息或資源，請點擊以下任一標題進入詳情頁面查看（如有）。

驅動程序或庫

LM90SW-LINUX — 用于 LM90 的 Linux 驅動程序

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:

  • (...)
View Options
支持軟件

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

Evaluation Board Software for Hardware Monitors and Digital Temperature Sensors
支持的產品和硬件

支持的產品和硬件

產品
數字溫度傳感器
LM63 — 1 條遠程和本地通道溫度傳感器，帶風扇控制功能 LM64 — 帶風扇控制功能和 5 個 GPIO 的遠程和本地溫度傳感器 LM71 — 具有 SPI 接口的 ±1.5°C 溫度傳感器 LM71-Q1 — 具有 SPI 接口的汽車級 ±1.5°C 溫度傳感器 LM73 — 具有 I2C/SMBus 接口的 ±1°C 溫度傳感器 LM86 — 具有 SMBus 接口的 ±0.75°C 遠程和本地溫度傳感器 LM89 — 具有 SMBus 接口和 2 個地址用于總線共享的 ±0.75°C 遠程和本地溫度傳感器 LM90 — 具有 SMBus 接口的遠程和本地溫度傳感器 LM93 — 具有 2 條遠程和 1 條本地通道的溫度傳感器，帶硬件監控器和 16 個電源電壓監控器 LM95010 — 具有 SensorPath 接口的 ±2°C 溫度傳感器 LM95071 — 具有 SPI 接口的 ±1°C 溫度傳感器 LM95221 — 具有 β 補償、SMBus 和 I2C 接口的 ±3°C 雙路遠程和本地溫度傳感器 LM95231 — 采用 TruTherm 技術且具有 SMBus 接口的雙路遠程和本地溫度傳感器 LM95235 — 具有 SMBus 接口、采用 β 補償技術、適用于 65/90nm 處理器二極管的 ±0.75°C 遠程和本地溫度傳感器 LM95235-Q1 — 采用 TruTherm 技術且具有 SMBus 接口的汽車級 ±2°C 遠程和本地溫度傳感器 LM96000 — 硬件監控器，帶風扇控制功能和 6 個電源電壓監控器 LM96080 — 1 條本地通道溫度傳感器，帶風扇轉速控制功能和電源電壓監控器 LM96163 — 具有 1 條遠程和本地通道的溫度傳感器，帶 β 補償和風扇控制功能 LM99 — 采用 TruTherm 技術且具有 SMBus 接口的遠程和本地溫度傳感器
支持軟件

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 (...)
支持的產品和硬件

支持的產品和硬件

產品
數字溫度傳感器
LM63 — 1 條遠程和本地通道溫度傳感器，帶風扇控制功能 LM64 — 帶風扇控制功能和 5 個 GPIO 的遠程和本地溫度傳感器 LM71 — 具有 SPI 接口的 ±1.5°C 溫度傳感器 LM71-Q1 — 具有 SPI 接口的汽車級 ±1.5°C 溫度傳感器 LM73 — 具有 I2C/SMBus 接口的 ±1°C 溫度傳感器 LM75A — 具有 I2C/SMBus 接口的 2C 業界通用溫度傳感器 LM86 — 具有 SMBus 接口的 ±0.75°C 遠程和本地溫度傳感器 LM89 — 具有 SMBus 接口和 2 個地址用于總線共享的 ±0.75°C 遠程和本地溫度傳感器 LM90 — 具有 SMBus 接口的遠程和本地溫度傳感器 LM93 — 具有 2 條遠程和 1 條本地通道的溫度傳感器，帶硬件監控器和 16 個電源電壓監控器 LM95010 — 具有 SensorPath 接口的 ±2°C 溫度傳感器 LM95071 — 具有 SPI 接口的 ±1°C 溫度傳感器 LM95172-Q1 — 具有 SPI 接口且支持 200°C 溫度的汽車級 ±1°C 溫度傳感器 LM95214 — 具有 SMBus 接口的 ±2°C 四路遠程和本地溫度傳感器 LM95221 — 具有 β 補償、SMBus 和 I2C 接口的 ±3°C 雙路遠程和本地溫度傳感器 LM95231 — 采用 TruTherm 技術且具有 SMBus 接口的雙路遠程和本地溫度傳感器 LM95233 — 采用 TruTherm 技術且具有 SMBus 接口的 ±2°C 雙路遠程和本地溫度傳感器 LM95234 — 采用 TruTherm 技術且具有 SMBus 接口的 ±2°C 四路遠程和本地溫度傳感器 LM95235 — 具有 SMBus 接口、采用 β 補償技術、適用于 65/90nm 處理器二極管的 ±0.75°C 遠程和本地溫度傳感器 LM95235-Q1 — 采用 TruTherm 技術且具有 SMBus 接口的汽車級 ±2°C 遠程和本地溫度傳感器 LM95241 — 具有 β 補償、SMBus 和 I2C 的 ±1.25°C 雙路遠程和本地溫度傳感器 LM95245 — 具有 SMBus 接口、采用 β 補償技術、適用于 45nm 處理器二極管的 ±0.75°C 遠程和本地溫度傳感器 LM96000 — 硬件監控器，帶風扇控制功能和 6 個電源電壓監控器 LM96080 — 1 條本地通道溫度傳感器，帶風扇轉速控制功能和電源電壓監控器 LM96163 — 具有 1 條遠程和本地通道的溫度傳感器，帶 β 補償和風扇控制功能 LM99 — 采用 TruTherm 技術且具有 SMBus 接口的遠程和本地溫度傳感器
精密 ADC
ADC128D818 — 具有溫度傳感器、內部/外部電壓基準和 I2C 接口的 12 位、82SPS、8 通道 Δ-Σ ADC
封裝 引腳 CAD 符號、封裝和 3D 模型
VSSOP (DGK) 8 Ultra Librarian

訂購和質量

包含信息：
  • RoHS
  • REACH
  • 器件標識
  • 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
  • 持續可靠性監測
包含信息：
  • 制造廠地點
  • 封裝廠地點

支持和培訓

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