Meets ASTM E1112 and ISO 80601 requirements
-55° C to 150° C range ±0.3° C accuracy
Texas Instruments announced on the 29th that it is launching a new family of temperature sensors that provides ±0.1° C accuracy over a wide temperature range and significantly simplifies the design of industrial and medical applications.

The TMP117 is a single-chip temperature sensor product that provides performance comparable to a Platinum RTD (Resistance Temperature Detector) and significantly reduces design complexity and power consumption.

The TMP117M is a medical digital temperature sensor product suitable for use in medical thermometers and the like. By using these new products, developers can rapidly develop high-accuracy, ultra-low-power patient monitoring, field transmitter, and metering applications.


High accuracy meeting various requirements
Both sensors have accuracy that requires no calibration. By using these two sensors, which provide ±0.1°C accuracy over a wide range and require no calibration during manufacturing, systems requiring high accuracy can be developed quickly and manufacturing costs can be lowered.

It also meets medical temperature requirements. The medical TMP117M provides an accuracy of ±0.1° C from 30° C to 45° C and meets the American Society for Testing and Materials (ASTM) E1112 and ISO 80601 requirements for patient thermometers.

In addition, it has achieved Class AA RTD accuracy for industrial applications. The TMP117 can directly read temperature without additional linearization or capture error. It maintains an accuracy of ±0.1° C from -20° C to 50° C and ±0.3° C from -55° C to 150° C.


Simplifying complexity and reducing development time
By using the TMP117, design and manufacturing complexity can be simplified compared to existing solutions while achieving the accuracy required by the application. To achieve the same level of accuracy using relatively platinum RTDs, developers must use multiple precision components, simulate and fine-tune the circuit, carefully plan the PCB layout to avoid impedance mismatches, develop software to linearize the output, and calibrate it for each system.

The TMP117 and TMP117M are compatible with I2C and SMBus interfaces and can directly read temperatures digitally, significantly reducing the time required for design, layout, and simulation and accelerating product launch. And since it consumes only 6.3µW, it extends battery life and allows for more accurate temperature measurements in the design.

TMP117 consumes up to 95% less power compared to conventional RTD measurement systems, allowing developers to meet the constrained power budgets of field transmitters or battery-powered applications.

The TMP117 and TMP117M enable more accurate temperature measurements by minimizing the impact of self-heating through low power consumption. These two sensors are new additions to TI's digital temperature sensor portfolio. With high accuracy, low power consumption, and miniaturized package options, developers can integrate intelligent thermal monitoring capabilities into their designs.

Developers can rapidly develop high-accuracy applications using the TMP117EVM evaluation board.