±2°C, 2.7V to 5.5V industry standard temperature sensor with I2C/SMBus interface
Product details
Parameters
Package | Pins | Size
Features
- 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
Description
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.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | LM75A Digital Temperature Sensor and Thermal Watchdog With Two-Wire Interface datasheet (Rev. P) | Dec. 30, 2014 |
Technical article | How to choose the right thermistor for your temperature sensing application | Feb. 12, 2020 | |
Technical article | How to enable thermal safety for automotive infotainment and cluster systems | Oct. 15, 2019 | |
Technical article | Driving industrial innovation with small-size sensors | Sep. 12, 2019 | |
Application note | Temperature sensors: PCB guidelines for surface mount devices (Rev. A) | Jan. 18, 2019 | |
Technical article | How to select a temperature sensor probe | Feb. 18, 2016 | |
Application note | Applying I2C-Compatible Temperature Sensors in Systems With Slow Clock Edges (Rev. A) | May 06, 2013 | |
User guide | LM75A User’s Guide | Jan. 17, 2013 | |
User guide | LM75AEB User’s Guide (Rev. A) | Aug. 24, 2012 | |
Application note | Tiny Temperature Sensors for Remote Systems | Feb. 17, 2003 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Software development
Linux Mainline Status
Available in Linux Main line: Yes
Available through git.ti.com: N/A
- LM75A
- TMP100
- TMP101
- (...)
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 (...)
Design tools & simulation
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SOIC (D) | 8 | View options |
VSSOP (DGK) | 8 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
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