Texas Instruments TMP117 High-Precision Digital Temperature Sensor
Texas Instruments TMP117 High-Precision Digital Temperature Sensor is designed to meet electronic patient thermometers' ASTM E1112 and ISO 80601 requirements. The TMP117 provides a 16-bit temperature result with a resolution of 0.0078°C and an accuracy of up to ±0.1°C across the temperature range of -20°C to 50°C with no calibration. The TMP117 has an interface that is I2C and SMBus™-compatible, programmable alert functionality, and the device can support up to four devices on a single bus. Integrated EEPROM is included for device programming with an additional 48-bits memory available for general use.
The low power consumption of the TMP117 minimizes the impact of self-heating on measurement accuracy. The TMP117 operates from 1.8V to 5.5V and typically consumes 3.5µA. For non-medical applications, the TMP117 can serve as a single chip digital alternative to a Platinum RTD. The TMP117 has an accuracy comparable to a Class AA RTD, while only using a fraction of the power of the power typically needed for a PT100 RTD. The TMP117 simplifies the design effort by removing many of the complexities of RTDs such as precision references, matched traces, complicated algorithms, and calibration.
The TMP117 units are 100% tested on a production setup that is NIST traceable and verified with equipment that is calibrated to ISO/IEC 17025 accredited standards.
Features
- TMP117 High accuracy temperature sensor
- ±0.1°C (Maximum) from –20°C to +50°C
- ±0.15°C (Maximum) from –40°C to +70°C
- ±0.2°C (Maximum) from –40°C to +100°C
- ±0.25°C (Maximum) from –55°C to +125°C
- ±0.3°C (Maximum) from –55°C to +150°C
- –55°C to +150°C Operating temperature range
- Low power consumption
- 3.5µA, 1Hz Conversion cycle
- 150nA Shutdown current
- 1.8V to 5.5V Supply range
- 0.0078°C (1 LSB) 16-Bit resolution
- Programmable temperature alert limits
- Selectable averaging
- Digital offset for system correction
- 48 Bits General-purpose EEPROM
- NIST Traceability
- SMBus™, I2C interface compatibility
Applications
- Medical Grade: Meets ASTM E1112 and ISO 80601-2-56
- Environmental monitoring and thermostats
- Wearables
- Asset tracking and cold chain
- Gas meters and heat meters
- Test and measurement
- PT100, PT500, PT1000 RTDs Replacement
- Cold-junction compensation of thermocouples
Associated Development Tools
Texas Instruments TMP117EVM Digital Temperature Sensor (EVM)
Provides the user with a simple way to get started with the TMP117, a digital temperature sensor.
Texas Instruments BP-BASSENSORSMKII BoosterPack Plug-in Module
Un module facile à utiliser pour ajouter des capteurs numériques à votre conception de kit de développement LaunchPad™.
Videos
Functional Block Diagram
