LM82
- 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.
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.
技术文档
类型 | 标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | LM82 Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface 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)。
LM83SW-LINUX — 用于 LM83 的 Linux 驱动程序
Linux 主线状态
在 Linux 主线中提供:是
可通过 git.ti.com 获取:不适用
- lm83
- lm82
与该器件关联的文件为:
- drivers/hwmon/lm83.c
- Documentation/hwmon/lm83
启用驱动程序支持
使用“make menuconfig”(也可以使用“make (...)
封装 | 引脚 | 下载 |
---|---|---|
SSOP (DBQ) | 16 | 查看选项 |
订购和质量
- 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
- 制造厂地点
- 封装厂地点