产品详情

Local sensor accuracy (max) 2 Type Remote Operating temperature range (°C) -40 to 140 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) 800 Temp resolution (max) (Bits) 11 Remote channels (#) 4 Addresses 3 Rating Catalog
Local sensor accuracy (max) 2 Type Remote Operating temperature range (°C) -40 to 140 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) 800 Temp resolution (max) (Bits) 11 Remote channels (#) 4 Addresses 3 Rating Catalog
WSON (NHL) 14 16 mm² 4 x 4
  • Accurately Senses Die Temperature of 4 Remote ICs or Diode Junctions and Local Temperature
  • TruTherm BJT Beta Compensation Technology Accurately Senses Sub-micron Process Thermal Diodes
  • Programmable Digital Filters and Analog Front End Filter
  • 0.125°C LSb Temperature Resolution
  • 0.03125°C LSb Remote Temperature Resolution with Digital Filter Enabled
  • +127.875°C/–128°C and 0°C/255°C Remote Ranges
  • Remote Diode Fault Detection, Model Selection and Offset Correction
  • Mask and Status Register Support
  • 3 Programmable TCRIT Outputs with Programmable Shared Hysteresis and Fault-Queue
  • Programmable Conversion Rate and Shutdown Mode One-shot Conversion Control
  • SMBus 2.0 Compatible Interface, Supports TIMEOUT
  • Three-level Address Pin
  • 14-pin WSON Package

Key Specifications

  • Local Temperature Accuracy ±2.0°C (max)
  • Remote Diode Temperature Accuracy ±0.875°C (max)
  • Supply Voltage 3.0V to 3.6V
  • Average Supply Current (1Hz conversion rate)

TruTherm is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

  • Accurately Senses Die Temperature of 4 Remote ICs or Diode Junctions and Local Temperature
  • TruTherm BJT Beta Compensation Technology Accurately Senses Sub-micron Process Thermal Diodes
  • Programmable Digital Filters and Analog Front End Filter
  • 0.125°C LSb Temperature Resolution
  • 0.03125°C LSb Remote Temperature Resolution with Digital Filter Enabled
  • +127.875°C/–128°C and 0°C/255°C Remote Ranges
  • Remote Diode Fault Detection, Model Selection and Offset Correction
  • Mask and Status Register Support
  • 3 Programmable TCRIT Outputs with Programmable Shared Hysteresis and Fault-Queue
  • Programmable Conversion Rate and Shutdown Mode One-shot Conversion Control
  • SMBus 2.0 Compatible Interface, Supports TIMEOUT
  • Three-level Address Pin
  • 14-pin WSON Package

Key Specifications

  • Local Temperature Accuracy ±2.0°C (max)
  • Remote Diode Temperature Accuracy ±0.875°C (max)
  • Supply Voltage 3.0V to 3.6V
  • Average Supply Current (1Hz conversion rate)

TruTherm is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

LM95234 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) interface that can very accurately monitor the temperature of four remote diodes as well as its own temperature that includes patent pending remote diode TruTherm BJT beta compensation beta compensation technology. The four remote diodes can be external devices such as microprocessors, graphics processors or diode-connected 2N3904s. The LM95234's TruTherm BJT beta compensation technology allows sensing of 90 nm or 65 nm process thermal diodes accurately.

The LM95234 reports temperature in two different formats for +127.875°C/–128°C range and 0°C/255°C range. The LM95234 TCRIT1, TCRIT2 and TCRIT3 outputs are triggered when any unmasked channel exceeds its corresponding programmable limit and can be used to shutdown the system, to turn on the system fans or as a microcontroller interrupt function. The current status of the TCRIT1, TCRIT2 and TCRIT3 pins can be read back from the status registers. Mask registers are available for further control of the TCRIT outputs.

Two LM95234 remote temperature channels have programmable digital filters while the other two remote channels utilize a fault-queue to minimize unwanted TCRIT events when temperature spikes are encountered.

For optimum flexibility and accuracy, each LM95234 channel includes registers for sub-micron process or 2N3904 diode model selection as well as offset correction. A three-level address pin allows connection of up to 3 LM95234s to the same SMBus master. The LM95234 includes power saving functions such as: programmable conversion rate, shutdown mode, and disabling of unused channels.

LM95234 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) interface that can very accurately monitor the temperature of four remote diodes as well as its own temperature that includes patent pending remote diode TruTherm BJT beta compensation beta compensation technology. The four remote diodes can be external devices such as microprocessors, graphics processors or diode-connected 2N3904s. The LM95234's TruTherm BJT beta compensation technology allows sensing of 90 nm or 65 nm process thermal diodes accurately.

The LM95234 reports temperature in two different formats for +127.875°C/–128°C range and 0°C/255°C range. The LM95234 TCRIT1, TCRIT2 and TCRIT3 outputs are triggered when any unmasked channel exceeds its corresponding programmable limit and can be used to shutdown the system, to turn on the system fans or as a microcontroller interrupt function. The current status of the TCRIT1, TCRIT2 and TCRIT3 pins can be read back from the status registers. Mask registers are available for further control of the TCRIT outputs.

Two LM95234 remote temperature channels have programmable digital filters while the other two remote channels utilize a fault-queue to minimize unwanted TCRIT events when temperature spikes are encountered.

For optimum flexibility and accuracy, each LM95234 channel includes registers for sub-micron process or 2N3904 diode model selection as well as offset correction. A three-level address pin allows connection of up to 3 LM95234s to the same SMBus master. The LM95234 includes power saving functions such as: programmable conversion rate, shutdown mode, and disabling of unused channels.

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* 数据表 LM95234 Quad Remote Diode & Local Temp Sensor w/SMBus Interface &TruTherm Tech 数据表 (Rev. D) 2013年 3月 22日

设计和开发

如需其他信息或资源,请点击以下任一标题进入详情页面查看(如有)。

驱动程序或库

LM95234SW-LINUX — 用于 LM95234 的 Linux 驱动程序

Linux 驱动程序支持 LM95234 系列远程和本地温度传感器。Linux 驱动程序支持通过 I2C 总线和接口与硬件监测子系统进行通信。
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:
  • lm95233
  • lm95234
Linux 源文件

与该器件关联的文件为:

  1. drivers/hwmon/lm95234.c
  2. Documentation/hwmon/lm95234
源文件

drivers/hwmon/lm95234.c

其他文件

Documentation/hwmon/lm95234

 

启用驱动程序支持

使用“make (...)
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
封装 引脚 CAD 符号、封装和 3D 模型
WSON (NHL) 14 Ultra Librarian

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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