LM84是TI公司的一款远程温度传感器产品，LM84是具有 SMBus 和 I2C 接口的 ±1°C 远程和本地温度传感器，本页介绍了LM84的产品说明、应用、特性等，并给出了与LM84相关的TI元器件型号供参考。
LM84 - 具有 SMBus 和 I2C 接口的 ±1°C 远程和本地温度传感器 - 远程温度传感器 - 温度传感器和控制IC - TI公司（Texas Instruments，德州仪器）
The LM84 is a remote diode temperature sensor, Delta-Sigma analog-to-digital converter, and digital over-temperature detector with an SMBus™ interface. The LM84 senses its own temperature as well as the temperature of a target IC with a diode junction, such as a Pentium® II processor or a diode connected 2N3904. A diode junction (semiconductor junction) is required on the target IC's die. A host can query the LM84 at any time to read the temperature of this diode as well as the temperature state of the LM84 itself. A T_CRIT_A# interrupt output becomes active when the temperature is greater than a programmable comparator limit, T_CRIT.
The host can program as well as read back the state of the T_CRIT register. Three state logic inputs allow two pins (ADD0, ADD1) to select up to 9 SMBus address locations for the LM84. The sensor powers up with default thresholds of 127°C for T_CRIT.
- Directly senses die temperature of remote ICs
- Senses temperature of remote diodes
- SMBus compatible interface, supports SMBus Timeout
- Register readback capability
- 7 bit plus sign temperature data format
- 2 address select lines enable 9 LM84s to be connected to a single bus
Key Specifications
Supply Voltage3.0V - 3.6V Supply Current1 mA (max) Local Temperature Accuracy±1.0°C (typ) Remote Diode Temperature Accuracy +60°C to +100°C±3°C (max) 0°C to +125°C±5°C (max)
