New high-accuracy digital temperature sensor

The new STS3x temperature sensor is based on the same chip as the SHT3x humidity sensors and comes in a tiny eight-pin DFN package measuring only 2.5 × 2.5mm2 with a height of 0.9mm. Its tiny size and the wide supply voltage range of 2.4 to 5.5V allow for integration in a great variety of applications. The sensor delivers high performance and a high accuracy of +/–0.3°C over an extensive temperature range combined with low power consumption – an especially important consideration for battery-operated devices.

The CMOSens technology is the basis of the STS3x sensor, offering increased intelligence, reliability, and improved accuracy compared to its predecessors. Furthermore, the sensor demonstrates a fast start-up and response time, and its functionality includes enhanced signal processing, two distinctive and user selectable I2C addresses and communication speeds of up to 1MHz. The STS3x temperature sensor is calibrated to provide a linearised, digital output that is compensated for supply voltage instabilities. Qualification is based on JESD 47, with a dedicated automotive qualification plan certified according to AEC Q100. The alert option with definable temperature set points enables using the sensor as a watchdog and can thus strongly optimise overall power consumption. 

The STS3x sensor is ideal for demanding data logger and temperature compensation applications. Due to its high accuracy, body temperature measurement in wearable devices and temperature calibration in automotive components are among the main target applications. In addition, a multitude of HVAC devices will benefit in terms of precision, power savings, and reliability when accounting for highly accurate temperature data.

For more information about the new STS3x temperature sensor, please visit: www.sensirion.com/sts3x