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數位溫度感測器

LM95221

現行

具 beta 補償和 SMBus、I2C 介面的 ±3°C 雙遠端和本機溫度感測器

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LM95221

現行
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產品詳細資料

Local sensor accuracy (max) 3 Type Remote Operating temperature range (°C) 0 to 85 Supply voltage (min) (V) 3 Interface type I2C, SMBus Supply voltage (max) (V) 3.6 Features ALERT, One-shot conversion Supply current (max) (µA) 2600 Temp resolution (max) (Bits) 10 Remote channels (#) 2 Addresses 1 Rating Catalog
Local sensor accuracy (max) 3 Type Remote Operating temperature range (°C) 0 to 85 Supply voltage (min) (V) 3 Interface type I2C, SMBus Supply voltage (max) (V) 3.6 Features ALERT, One-shot conversion Supply current (max) (µA) 2600 Temp resolution (max) (Bits) 10 Remote channels (#) 2 Addresses 1 Rating Catalog
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Accurately Senses Die Temperature of Remote ICs or Diode Junctions
  • Remote Diode Fault Detection
  • On-board Local Temperature Sensing
  • Remote Temperature Readings
    • 0.125°C LSb
    • 10-bits Plus Sign or 11-bits Programmable Resolution
    • 11-bits Resolves Temperatures Above 127°C
  • Local Temperature Readings
    • 0.25°C
    • 9-bits Plus Sign
  • Status Register Support
  • Programmable Conversion Rate Allows User Optimization of Power Consumption
  • Shutdown Mode One-shot Conversion Control
  • SMBus 2.0 Compatible Interface, Supports TIMEOUT
  • 8-pin VSSOP Package

Key Specifications

  • Local Temperature Accuracy
    • TA = 0°C to 85°C ± 3.0°C (max)
  • Remote Diode Temperature Accuracy
    • TA = 30°C to 50°C, TD = 45°C to 85°C
      ±1.0 °C (Max)
    • TA = 0°C to 85°C, TD = 25°C to 140°C
      ±3.0°C (Max)
  • Supply Voltage 3.0 V to 3.6 V
  • Supply Current 2 mA (Typ)

All trademarks are the property of their respective owners.

  • Accurately Senses Die Temperature of Remote ICs or Diode Junctions
  • Remote Diode Fault Detection
  • On-board Local Temperature Sensing
  • Remote Temperature Readings
    • 0.125°C LSb
    • 10-bits Plus Sign or 11-bits Programmable Resolution
    • 11-bits Resolves Temperatures Above 127°C
  • Local Temperature Readings
    • 0.25°C
    • 9-bits Plus Sign
  • Status Register Support
  • Programmable Conversion Rate Allows User Optimization of Power Consumption
  • Shutdown Mode One-shot Conversion Control
  • SMBus 2.0 Compatible Interface, Supports TIMEOUT
  • 8-pin VSSOP Package

Key Specifications

  • Local Temperature Accuracy
    • TA = 0°C to 85°C ± 3.0°C (max)
  • Remote Diode Temperature Accuracy
    • TA = 30°C to 50°C, TD = 45°C to 85°C
      ±1.0 °C (Max)
    • TA = 0°C to 85°C, TD = 25°C to 140°C
      ±3.0°C (Max)
  • Supply Voltage 3.0 V to 3.6 V
  • Supply Current 2 mA (Typ)

All trademarks are the property of their respective owners.

The LM95221 is a dual remote diode temperature sensor in an 8-lead VSSOP package. The 2-wire serial interface of the LM95221 is compatible with SMBus 2.0. The LM95221 can sense three temperature zones, it can measure the temperature of its own die as well as two diode connected transistors. The diode connected transistors can be a thermal diode as found in Pentium and AMD processors or can simply be a diode connected MMBT3904 transistor. The LM95221 resolution format for remote temperature readings can be programmed to be 10-bits plus sign or 11-bits unsigned. In the unsigned mode the LM95221 remote diode readings can resolve temperatures above 127°C. Local temperature readings have a resolution of 9-bits plus sign.

The temperature of any ASIC can be accurately determined using the LM95221 as long as a dedicated diode (semiconductor junction) is available on the target die. The LM95221 remote sensor accuracy of ±1°C is factory trimmed for a series resistance of 2.7 ohms and 1.008 non-ideality factor.

The LM95221 is a dual remote diode temperature sensor in an 8-lead VSSOP package. The 2-wire serial interface of the LM95221 is compatible with SMBus 2.0. The LM95221 can sense three temperature zones, it can measure the temperature of its own die as well as two diode connected transistors. The diode connected transistors can be a thermal diode as found in Pentium and AMD processors or can simply be a diode connected MMBT3904 transistor. The LM95221 resolution format for remote temperature readings can be programmed to be 10-bits plus sign or 11-bits unsigned. In the unsigned mode the LM95221 remote diode readings can resolve temperatures above 127°C. Local temperature readings have a resolution of 9-bits plus sign.

The temperature of any ASIC can be accurately determined using the LM95221 as long as a dedicated diode (semiconductor junction) is available on the target die. The LM95221 remote sensor accuracy of ±1°C is factory trimmed for a series resistance of 2.7 ohms and 1.008 non-ideality factor.
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* Data sheet LM95221 Dual Remote Diode Digital Temperature Sensor with SMBus Interface datasheet (Rev. B) 2013年 3月 22日

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LM63 — 具風扇控制的 1 個遠端與本機溫度感測器 LM64 — 具風扇控制與 5 個 GPIO 的 1 個遠端與本機溫度感測器 LM71 — 具 SPI 介面的 ±1.5°C 溫度感測器 LM71-Q1 — 具 SPI 介面的汽車級、±1.5°C 溫度感測器 LM73 — 具 I2C/SMBus 介面的 ±1°C 溫度感測器 LM86 — 具 SMBu 介面的 ±0.75°C 遠端和本機溫度感測器 LM89 — 具 SMBus 介面和 2 個匯流排分載位址的 ± 0.75 ° C 遠端和本機溫度感測器 LM90 — 具 SMBus 介面的遠端和本機溫度感測器 LM93 — 具硬體監控器和 16 個電源電壓監控器的 2 個遠端、1 個本機溫度感測器 LM95010 — 具 SensorPath 介面的 ±2°C 溫度感測器 LM95071 — 具 SPI 介面的 ±1°C 溫度感測器 LM95221 — 具 beta 補償和 SMBus、I2C 介面的 ±3°C 雙遠端和本機溫度感測器 LM95231 — 具 TruTherm™ 技術和 SMBus 介面的雙遠端和本機溫度感測器 LM95235 — 具 SMBus、beta 補償且適用 65/90nm 二極體的 ±0.75°C 遠端和本機溫度感測器 LM95235-Q1 — 具 TruTherm™ 技術和 SMBus 的汽車級 ±2°C 遠端和本機溫度感測器 LM96000 — 具風扇控制和 6 個電源電壓監控器的硬體監控器 LM96080 — 具風扇速度和電源電壓監控器的 1 個本機溫度感測器 LM96163 — 具 beta 補償和風扇控制的 1 個遠端與本機溫度感測器 LM99 — 具 TruTherm™ 技術和 SMBus 介面的遠端和本機溫度感測器
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產品
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LM63 — 具風扇控制的 1 個遠端與本機溫度感測器 LM64 — 具風扇控制與 5 個 GPIO 的 1 個遠端與本機溫度感測器 LM71 — 具 SPI 介面的 ±1.5°C 溫度感測器 LM71-Q1 — 具 SPI 介面的汽車級、±1.5°C 溫度感測器 LM73 — 具 I2C/SMBus 介面的 ±1°C 溫度感測器 LM75A — 2C 業界標準溫度感測器、I2C/SMBus 介面 LM86 — 具 SMBu 介面的 ±0.75°C 遠端和本機溫度感測器 LM89 — 具 SMBus 介面和 2 個匯流排分載位址的 ± 0.75 ° C 遠端和本機溫度感測器 LM90 — 具 SMBus 介面的遠端和本機溫度感測器 LM93 — 具硬體監控器和 16 個電源電壓監控器的 2 個遠端、1 個本機溫度感測器 LM95010 — 具 SensorPath 介面的 ±2°C 溫度感測器 LM95071 — 具 SPI 介面的 ±1°C 溫度感測器 LM95172-Q1 — 具 200°C 功能和 SPI 介面的汽車級 ±1°C 溫度感測器 LM95214 — 具 SMBus 介面的 ±2°C 四遠端和本機溫度感測器 LM95221 — 具 beta 補償和 SMBus、I2C 介面的 ±3°C 雙遠端和本機溫度感測器 LM95231 — 具 TruTherm™ 技術和 SMBus 介面的雙遠端和本機溫度感測器 LM95233 — 具 TruTherm™ 技術和 SMBus 介面的 ±2°C 雙遠端和本機溫度感測器 LM95234 — 具 TruTherm™ 技術和 SMBus 介面的 ±2°C 雙遠端和本機溫度感測器 LM95235 — 具 SMBus、beta 補償且適用 65/90nm 二極體的 ±0.75°C 遠端和本機溫度感測器 LM95235-Q1 — 具 TruTherm™ 技術和 SMBus 的汽車級 ±2°C 遠端和本機溫度感測器 LM95241 — 具 beta 補償和 SMBus、I2C 介面的 ±1.25°C 雙遠端和本機溫度感測器 LM95245 — 具 SMBus、beta 補償且適用 45nm 二極體的 ±0.75°C 遠端和本機溫度感測器 LM96000 — 具風扇控制和 6 個電源電壓監控器的硬體監控器 LM96080 — 具風扇速度和電源電壓監控器的 1 個本機溫度感測器 LM96163 — 具 beta 補償和風扇控制的 1 個遠端與本機溫度感測器 LM99 — 具 TruTherm™ 技術和 SMBus 介面的遠端和本機溫度感測器
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