Digital temperature sensor with SMBus and I2C-compatible interface

15th January 2019
Posted By : Alex Lynn
Digital temperature sensor with SMBus and I2C-compatible interface

The TMP117 from Texas Instruments is a high-precision digital temperature sensor. It is designed to meet ASTM E1112 and ISO 80601 requirements for electronic patient thermometers. 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 to +50°C with no calibration.

The TMP117 has in 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 minimises the impact of self-heating on measurement accuracy. The TMP117 operates from 1.8 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 ETD. The TMP117 has an accuracy comparable to a Class AA ETD, while only using a fraction of the power of the power typically needed for a PT100 ETD. 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.

To learn more, click here.


You must be logged in to comment

Write a comment

No comments




Sign up to view our publications

Sign up

Sign up to view our downloads

Sign up

Girls in Tech | Catalyst | 2019
4th September 2019
United Kingdom The Brewery, London
DSEI 2019
10th September 2019
United Kingdom EXCEL, London
EMO Hannover 2019
16th September 2019
Germany Hannover
Women in Tech Festival 2019
17th September 2019
United Kingdom The Brewery, London
European Microwave Week 2019
29th September 2019
France Porte De Versailles Paris