LM75A
- No External Components Required
- Shutdown Mode to Minimize Power Consumption
- Up to Eight LM75As can be Connected to a Single Bus
- Power up Defaults Permit Stand-Alone Operation as Thermostat
- Key Specifications:
- Supply Voltage
- LM75A: 2.7 V to 5.5 V
- Supply Current
- Operating: 280 µA (Typical)
- Shutdown: 4 µA (Typical)
- Temperature Accuracy
- 25°C to 100°C: ±2°C (Max)
- 55°C to 125°C: ±3°C (Max)
- Supply Voltage
The LM75A is an industry-standard digital temperature sensor with an integrated sigma-delta analog-to-digital converter (ADC) and I2C interface. The LM75A provides 9-bit digital temperature readings with an accuracy of ±2°C from –25°C to 100°C and ±3°C over –55°C to 125°C.
The LM75A operates with a single supply from 2.7 V to 5.5 V. Communication is accomplished over a 2-wire interface which operates up to 400 kHz. The LM75A has three address pins, allowing up to eight LM75A devices to operate on the same 2-wire bus. The LM75A has a dedicated overtemperature output (O.S.) with programmable limit and hysteresis. This output has programmable fault tolerance, which lets the user to define the number of consecutive error conditions that must occur before O.S. is activated. The wide temperature and supply range and I2C interface make the LM75A ideal for a number of applications including base stations, electronic test equipment, office electronics, personal computers, and any other system in which thermal management is critical to performance. The LM75A is available in an SOIC-8 package and an VSSOP-8 package.
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技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | LM75A Digital Temperature Sensor and Thermal Watchdog With Two-Wire Interface datasheet (Rev. P) | PDF | HTML | 2014/12/30 | ||
| 應用說明 | LM75B and TMP1075 Industry-Standard Devices: Design Guidelines and Spec Comparison (Rev. A) | PDF | HTML | 2024/3/7 | |||
| 應用說明 | Temperature sensors: PCB guidelines for surface mount devices (Rev. A) | 2019/1/18 | ||||
| 應用說明 | Applying I2C-Compatible Temperature Sensors in Systems With Slow Clock Edges (Rev. A) | 2013/5/6 | ||||
| 使用指南 | LM75A User’s Guide | 2013/1/17 | ||||
| 使用指南 | LM75AEB User’s Guide (Rev. A) | 2012/8/24 | ||||
| 應用說明 | Tiny Temperature Sensors for Remote Systems | 2003/2/17 |
設計與開發
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LM75SW-LINUX — 適用於 I2C 溫度感測器的 Linux 驅動程式
The Linux driver support LM75 compatible Temperature Sensors. The Linux driver supports communication through the I2C bus and interfaces with the Hardware Monitoring sub-system.
Linux Mainline StatusAvailable in Linux Main line: Yes
Available through git.ti.com: N/A
- LM75A
- TMP100
- TMP101
- (...)
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 (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| VSSOP (DGK) | 8 | Ultra Librarian |