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.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LM75A Digital Temperature Sensor and Thermal Watchdog With Two-Wire Interface datasheet (Rev. P) | PDF | HTML | 30 Dec 2014 |
| Application note | LM75B and TMP1075 Industry-Standard Devices: Design Guidelines and Spec Comparison (Rev. A) | PDF | HTML | 07 Mar 2024 | |
| Application note | Temperature sensors: PCB guidelines for surface mount devices (Rev. A) | 18 Jan 2019 | ||
| Application note | Applying I2C-Compatible Temperature Sensors in Systems With Slow Clock Edges (Rev. A) | 06 May 2013 | ||
| User guide | LM75A User’s Guide | 17 Jan 2013 | ||
| User guide | LM75AEB User’s Guide (Rev. A) | 24 Aug 2012 | ||
| Application note | Tiny Temperature Sensors for Remote Systems | 17 Feb 2003 |
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Available in Linux Main line: Yes
Available through git.ti.com: N/A
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.
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| VSSOP (DGK) | 8 | Ultra Librarian |
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