The LM82 is a digital temperature sensor with a 2 wire serial interface that senses the voltage and thus the temperature of a remote diode using a Delta-Sigma analog-to-digital converter with a digital over-temperature detector. The LM82 accurately senses its own temperature as well as the temperature of external devices, such as Pentium II Processors or diode connected 2N3904s. The temperature of any ASIC can be detected using the LM82 as long as a dedicated diode (semiconductor junction) is available on the die. Using the SMBus interface a host can access the LM82's registers at any time. Activation of a T_CRIT_A output occurs when any temperature is greater than a programmable comparator limit, T_CRIT. Activation of an INT output occurs when any temperature is greater than its corresponding programmable comparator HIGH limit.

The host can program as well as read back the state of the T_CRIT register and the 2 T_HIGH registers. Three state logic inputs allow two pins (ADD0, ADD1) to select up to 9 SMBus address locations for the LM82. The sensor powers up with default thresholds of 127°C for T_CRIT and all T_HIGHs. The LM82 is pin for pin and register compatible with the LM84, Maxim MAX1617 and Analog Devices ADM1021.

• Accurately Senses Die Temperature of Remote ICs, or Diode Junctions
• On-board Local Temperature Sensing
• SMBus and I2C Compatible Interface, Supports SMBus 1.1 TIMEOUT
• Two Interrupt Outputs: INT and T_CRIT_A
• Register Readback Capability
• 7 bit Plus Sign Temperature Data Format, 1°C Resolution
• 2 Address Select Pins Allow Connection of 9 LM82s on a Single Bus

Key Specifications

• Supply Voltage: 3.0 to 3.6V
• Supply Current: 0.8mA (max)
• Local Temp Accuracy (includes quantization error):
  • 0 to +85 ±3.0°C (max)
• Remote Diode Temp Accuracy (includes quantization error):
  • +25°C to +100°C ±3°C (max)
  • 0°C to +125°C ±4°C (max)

All trademarks are the property of their respective owners.

• Local sensor accuracy (Max) (+/- C)
• 3
• Type
• Remote
• Operating temperature range (C)
• -40 to 125
• Supply voltage (Min) (V)
• 3
• Interface type
• I2C, SMBus
• Supply voltage (Max) (V)
• 3.6
• Supply current (Max) (uA)
• 800
• Temp resolution (Max) (bits)
• 8
• Features
• ALERT
• Remote channels (#)
• 1
• Addresses
• 9
• Rating
• Catalog

LM82的完整型号有：LM82CIMQA/NOPB、LM82CIMQAX/NOPB，以下是这些产品的关键参数及官网采购报价：

LM82CIMQA/NOPB，工作温度：-40 to 125，封装：SSOP (DBQ)-16，包装数量MPQ：95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LM82CIMQA/NOPB的批量USD价格：2.549（1000+）

LM82CIMQAX/NOPB，工作温度：-40 to 125，封装：SSOP (DBQ)-16，包装数量MPQ：2500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LM82CIMQAX/NOPB的批量USD价格：2.157（1000+）

LM83SW-LINUX — 用于 LM83 的 Linux 驱动程序

Linux 驱动程序支持 LM83 系列的系统硬件监测计。Linux 驱动程序支持通过 I2C 总线和接口与硬件监控子系统进行通信。
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：

• lm83
• lm82

Linux 源文件

与该器件关联的文件为：

drivers/hwmon/lm83.c

Documentation/hwmon/lm83

源文件

drivers/hwmon/lm83.c

其他文件

Documentation/hwmon/lm83

启用驱动程序支持 使用“make menuconfig”（也可以使用“make (...)