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.

• 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.

• Local sensor accuracy (Max) (+/- C)
• 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
• Supply current (Max) (uA)
• 800
• Temp resolution (Max) (bits)
• 11
• Features
• One-shot conversion, ALERT
• Remote channels (#)
• 4
• Addresses
• 3
• Rating
• Catalog

LM95234的完整型号有：LM95234CISD/NOPB、LM95234CISDX/NOPB，以下是这些产品的关键参数及官网采购报价：

LM95234CISD/NOPB，工作温度：-40 to 140，封装：WSON (NHL)-14，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM95234CISD/NOPB的批量USD价格：1.25（1000+）

LM95234CISDX/NOPB，工作温度：-40 to 140，封装：WSON (NHL)-14，包装数量MPQ：4500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM95234CISDX/NOPB的批量USD价格：1.042（1000+）

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：

drivers/hwmon/lm95234.c

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 (...)

SENSOREVAL — 用于硬件监控器和数字温度传感器的评估板软件

SensorEval
SensorEval 软件支持通过 USB 接口连接的 TI 最新温度传感器和硬件监控器评估板。此外，该软件还允许访问直接安装在支持 Intel 芯片组的主板上的传感器。

• 下载 SensorEval 软件和手册
• 为以下各项提供 Windows XP 支持：
  • USB 评估板（LM93 除外）
  • Intel ICHx 接口（ADCS9888、LM32、LM40、LM41、LM71、LM95010 和 LM95071 除外）
  • “无硬件”模式支持在没有任何硬件的情况下运行软件