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LM95231

現行

具 TruTherm™ 技術和 SMBus 介面的雙遠端和本機溫度感測器

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LM95231

現行
產品規格表 立即訂購

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) 402 Temp resolution (max) (Bits) 10 Remote channels (#) 2 Addresses 3 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) 402 Temp resolution (max) (Bits) 10 Remote channels (#) 2 Addresses 3 Rating Catalog
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Accurately Senses Die Temperature of Remote ICs or Diode Junctions
  • Uses TruTherm Technology for Precision “Thermal Diode” Temperature Measurement
  • Thermal Diode Input Stage with Analog Filtering
  • Thermal Diode Digital Filtering
  • Intel Pentium 4 Processor on 90nm Process or 2N3904 Non-ideality Selection
  • Remote Diode Fault Detection
  • On-board Local Temperature Sensing
  • Remote Temperature Readings Without Digital Filtering:
    • 0.125°C LSb
    • 10-bits Plus Sign or 11-bits Programmable Resolution
    • 11-bits Resolves Temperatures Above 127 °C
  • Remote Temperature Readings with Digital Filtering:
    • 0.03125°C LSb with Filtering
    • 12-bits Plus Sign or 13-bits Programmable Resolution
    • 13-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:
    • Remote Temperature Accuracy ±0.75°C (max)
    • Local Temperature Accuracy ±3.0°C (max)
    • Supply Voltage 3.0V to 3.6V
    • Supply Current 402µA (typ)
  • Accurately Senses Die Temperature of Remote ICs or Diode Junctions
  • Uses TruTherm Technology for Precision “Thermal Diode” Temperature Measurement
  • Thermal Diode Input Stage with Analog Filtering
  • Thermal Diode Digital Filtering
  • Intel Pentium 4 Processor on 90nm Process or 2N3904 Non-ideality Selection
  • Remote Diode Fault Detection
  • On-board Local Temperature Sensing
  • Remote Temperature Readings Without Digital Filtering:
    • 0.125°C LSb
    • 10-bits Plus Sign or 11-bits Programmable Resolution
    • 11-bits Resolves Temperatures Above 127 °C
  • Remote Temperature Readings with Digital Filtering:
    • 0.03125°C LSb with Filtering
    • 12-bits Plus Sign or 13-bits Programmable Resolution
    • 13-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:
    • Remote Temperature Accuracy ±0.75°C (max)
    • Local Temperature Accuracy ±3.0°C (max)
    • Supply Voltage 3.0V to 3.6V
    • Supply Current 402µA (typ)

The LM95231 is a precision dual remote diode temperature sensor (RDTS) that uses Texas Instruments’ TruTherm technology. The 2-wire serial interface of the LM95231 is compatible with SMBus 2.0. The LM95231 can sense three temperature zones, it can measure the temperature of its own die as well as two diode connected transistors. The LM95231 includes digital filtering and an advanced input stage that includes analog filtering and TruTherm technology that reduces processor-to-processor non-ideality spread. The diode connected transistors can be a “thermal diode” as found in Intel and AMD processors or can simply be a diode connected MMBT3904 transistor. TruTherm technology allows accurate measurement of “thermal diodes” found on small geometry processes, 90nm and below. The LM95231 supports user selectable thermal diode non-ideality of either a Pentium 4 processor on 90nm process or 2N3904.

The LM95231 resolution format for remote temperature readings can be programmed to be 11-bits signed or unsigned with the digital filtering disabled. When the filtering is enabled the resolution increases to 13-bits signed or unsigned. In the unsigned mode the LM95231 remote diode readings can resolve temperatures above 127°C. Local temperature readings have a resolution of 9-bits plus sign.

The LM95231 is a precision dual remote diode temperature sensor (RDTS) that uses Texas Instruments’ TruTherm technology. The 2-wire serial interface of the LM95231 is compatible with SMBus 2.0. The LM95231 can sense three temperature zones, it can measure the temperature of its own die as well as two diode connected transistors. The LM95231 includes digital filtering and an advanced input stage that includes analog filtering and TruTherm technology that reduces processor-to-processor non-ideality spread. The diode connected transistors can be a “thermal diode” as found in Intel and AMD processors or can simply be a diode connected MMBT3904 transistor. TruTherm technology allows accurate measurement of “thermal diodes” found on small geometry processes, 90nm and below. The LM95231 supports user selectable thermal diode non-ideality of either a Pentium 4 processor on 90nm process or 2N3904.

The LM95231 resolution format for remote temperature readings can be programmed to be 11-bits signed or unsigned with the digital filtering disabled. When the filtering is enabled the resolution increases to 13-bits signed or unsigned. In the unsigned mode the LM95231 remote diode readings can resolve temperatures above 127°C. Local temperature readings have a resolution of 9-bits plus sign.
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* Data sheet LM95231 Precision Dual Remote Diode Temperature Sensor with SMBus Interface and TruTherm™ Technology datasheet (Rev. F) PDF | HTML 2023年 11月 20日

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驅動程式或資料庫

LM95241SW-LINUX — 適用於 LM95241 的 Linux 驅動程式

The Linux driver supports the LM95241 series of Dual 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 (...)
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DIGITALTEMPSENSORSEVM-SW — Eval Board Software for Hardware Monitors and Digital Temp Sensors

Evaluation Board Software for Hardware Monitors and Digital Temperature Sensors
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產品
數位溫度感測器
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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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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產品
數位溫度感測器
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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ADC128D818 — 具溫度感測器、內部/外部電壓參考和 I2C 介面的 12 位元 82SPS 8 通道 ΔΣ ADC
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