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数字温度传感器

LM95241

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带 β 补偿、采用 SMBus 和 I2C 接口的 ±1.25°C 双通道远程和本地温度传感器

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LM95241

正在供货
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产品详情

Local sensor accuracy (max) 3 Type Remote Operating temperature range (°C) 0 to 85 Supply voltage (min) (V) 2.7 Interface type I2C, SMBus Supply voltage (max) (V) 5.5 Features ALERT, One-shot conversion Supply current (max) (µA) 640 Temp resolution (max) (bps) 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) 2.7 Interface type I2C, SMBus Supply voltage (max) (V) 5.5 Features ALERT, One-shot conversion Supply current (max) (µA) 640 Temp resolution (max) (bps) 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 Processor on 65nm or 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 Diode Temperature Accuracy
    • TA = 20°C to 40°C, TD = 45°C to 85°C ±1.25 °C (Max)
    • TA = 0°C to 85°C, TD = 25°C to 140°C ±2.5 °C (Max)
  • Local Temperature Accuracy
    • TA = 0°C to 85°C ±3.0 °C (Max)
  • Supply Voltage 3.0 V to 3.6 V
  • Average Supply Current 471 μA (Typ)

All trademarks are the property of their respective owners.

  • 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 Processor on 65nm or 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 Diode Temperature Accuracy
    • TA = 20°C to 40°C, TD = 45°C to 85°C ±1.25 °C (Max)
    • TA = 0°C to 85°C, TD = 25°C to 140°C ±2.5 °C (Max)
  • Local Temperature Accuracy
    • TA = 0°C to 85°C ±3.0 °C (Max)
  • Supply Voltage 3.0 V to 3.6 V
  • Average Supply Current 471 μA (Typ)

All trademarks are the property of their respective owners.

The LM95241 is a precision dual remote diode temperature sensor (RDTS) that uses TI's TruTherm technology. The 2-wire serial interface of the LM95241 is compatible with SMBus 2.0. The LM95241 can sense three temperature zones, it can measure the temperature of its own die as well as two diode connected transistors. The LM95241 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 such as 90nm and 65nm. The LM95241 supports user selectable thermal diode non-ideality of either Intel processor on 90nm or 65nm process or 2N3904.

The LM95241 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 LM95241 remote diode readings can resolve temperatures above 127°C. Local temperature readings have a resolution of 9-bits plus sign.

The LM95241 is a precision dual remote diode temperature sensor (RDTS) that uses TI's TruTherm technology. The 2-wire serial interface of the LM95241 is compatible with SMBus 2.0. The LM95241 can sense three temperature zones, it can measure the temperature of its own die as well as two diode connected transistors. The LM95241 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 such as 90nm and 65nm. The LM95241 supports user selectable thermal diode non-ideality of either Intel processor on 90nm or 65nm process or 2N3904.

The LM95241 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 LM95241 remote diode readings can resolve temperatures above 127°C. Local temperature readings have a resolution of 9-bits plus sign.
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类型 标题 下载最新的英语版本 日期
* 数据表 LM95241 Dual Remote Diode Temp Sensor w/SMBus Interface & TruTherm Technology 数据表 (Rev. E) 2013年 3月 22日

设计和开发

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驱动程序或库

LM95241SW-LINUX — 用于 LM95241 的 Linux 驱动程序

Linux 驱动程序支持 LM95241 系列双路远程和本地温度传感器。Linux 驱动程序支持通过 I2C 总线进行通信，并可与硬件监测子系统接口连接。
Linux 主线状态

在 Linux 主线中提供：是
可通过 git.ti.com 获取：不适用

支持的器件:
  • lm95231
  • lm95241
Linux 源文件

与该器件关联的文件为：

  1. drivers/hwmon/lm95241.c
源文件

drivers/hwmon/lm95241.c

 

启用驱动程序支持

使用“make menuconfig”（也可以使用“make xconfig”或“make nconfig”）配置内核

Menuconfig 位置

 (...)
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支持软件

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 (...)
支持的产品和硬件

支持的产品和硬件

产品
数字温度传感器
LM63 — 1 条远程和本地通道温度传感器，带风扇控制功能 LM64 — 带风扇控制功能和 5 个 GPIO 的远程和本地温度传感器 LM71 — 具有 SPI 接口的 ±1.5°C 温度传感器 LM71-Q1 — 具有 SPI 接口的汽车级 ±1.5°C 温度传感器 LM73 — 具有 I2C/SMBus 接口的 ±1°C 温度传感器 LM75A — 具有 I2C/SMBus 接口的 2C 业界通用温度传感器 LM86 — 具有 SMBus 接口的 ±0.75°C 远程和本地温度传感器 LM89 — 具有 SMBus 接口和 2 个地址用于总线共享的 ±0.75°C 远程和本地温度传感器 LM90 — 具有 SMBus 接口的远程和本地温度传感器 LM93 — 具有 2 条远程和 1 条本地通道的温度传感器，带硬件监控器和 16 个电源电压监控器 LM95010 — 具有 SensorPath 接口的 ±2°C 温度传感器 LM95071 — 具有 SPI 接口的 ±1°C 温度传感器 LM95172-Q1 — 具有 SPI 接口且支持 200°C 温度的汽车级 ±1°C 温度传感器 LM95214 — 具有 SMBus 接口的 ±2°C 四路远程和本地温度传感器 LM95221 — 带 β 补偿、采用 SMBus 和 I2C 接口的 ±3°C 双通道远程和本地温度传感器 LM95231 — 采用 TruTherm 技术且具有 SMBus 接口的双路远程和本地温度传感器 LM95233 — 采用 TruTherm 技术且具有 SMBus 接口的 ±2°C 双路远程和本地温度传感器 LM95234 — 采用 TruTherm 技术且具有 SMBus 接口的 ±2°C 四路远程和本地温度传感器 LM95235 — 具有 SMBus 接口、采用 β 补偿技术、适用于 65/90nm 二极管的 ±0.75°C 远程和本地温度传感器 LM95235-Q1 — 采用 TruTherm 技术且具有 SMBus 接口的汽车级 ±2°C 远程和本地温度传感器 LM95241 — 带 β 补偿、采用 SMBus 和 I2C 接口的 ±1.25°C 双通道远程和本地温度传感器 LM95245 — 具有 SMBus 接口、采用 β 补偿技术、适用于 45nm 二极管的 ±0.75°C 远程和本地温度传感器 LM96000 — 硬件监控器，带风扇控制功能和 6 个电源电压监控器 LM96080 — 1 条本地通道温度传感器，带风扇转速控制功能和电源电压监控器 LM96163 — 具有 1 条远程和本地通道的温度传感器，带 β 补偿和风扇控制功能 LM99 — 采用 TruTherm 技术且具有 SMBus 接口的远程和本地温度传感器
精密 ADC
ADC128D818 — 具有温度传感器、内部/外部电压基准和 I2C 接口的 12 位、82SPS、8 通道 Δ-Σ ADC
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封装 引脚 CAD 符号、封装和 3D 模型
VSSOP (DGK) 8 Ultra Librarian
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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
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

支持和培训

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