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(shù)據(jù)表 LM90 +-;3C Accurate, Remote Diode & Local Dig Temp Sensor w/2-Wire Interface 數(shù)據(jù)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

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(xù)可靠性監(jiān)測
包含信息：
  • 制造廠地點
  • 封裝廠地點

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