industry news
Subscribe Now

Temperature Sensor Accurate to 0.25°C, from STMicroelectronics, Delivers Flexible Power Savings for Mobile Monitoring

Geneva, November 18, 2019 — With typical temperature-reading accuracy of 0.25°C and low operating and standby current, the STMicroelectronics STTS22H enhances temperature and heat-flow monitoring in asset trackers, shipping-container loggers, HVAC systems, air humidifiers, refrigerators, building-automation systems, and smart consumer devices.

The STTS22H is I2C and SMBus 3.0 compliant, and supports flexible operating modes including configurable output data rate (ODR) down to 1Hz, a power-saving one-shot mode, and an interrupt pin that supports SMBus Alert Response Address (ARA). This allows the sensor, as an SMBus slave, to signal the application if a user-programmed upper or lower temperature threshold is exceeded. Programmable I²C/SMBus slave addresses allow up to two STTS22H sensors to share the same bus.

Power consumption is very low, drawing just 2.0µA at 1Hz ODR and 1.75µA during periodic one-shot measurements, helping extend the running time of battery-powered devices. In standby mode with the serial port inactive, the STTS22H draws a mere 0.5µA (typical). The 1.5-3.6V operating-voltage range allows use with various power sources such as a small lithium cell.

The sensor is fast-acting, with conversion time of 5ms, and provides 16-bit temperature data. The package features a metal slug that minimizes thermal resistance to ensure fast settling at the ambient temperature. Devices come factory-calibrated and maintain the 0.25°C typical accuracy from -10°C to 60°C, eliminating any need for user calibration.

The STTS22H is in production now as a compact and low-profile 2.0mm x 2.0mm x 0.5mm 6-lead UDFN, priced at $0.49 for orders of 1000 pieces.

Please visit www.st.com/stts22hh-pr for further information.

Leave a Reply

featured blogs
Dec 11, 2019
A popular demonstration at Super Computing 2019 (SC19) was a collaboration between Samtec and eSilicon that emulates next generation data center architectures for typical 19 inch rack mount applications. In the video above, Ralph Page, Systems Architect at Samtec, walks us th...
Dec 11, 2019
Do you want to quickly view a schematic, layout, or IC package without installing the complete OrCAD product suite? Get read-only access to design data created in OrCAD Capture , PCB Editor , or... [[ Click on the title to access the full blog on the Cadence Community site. ...
Dec 10, 2019
I now expect widespread deployment of fully autonomous cars by about 2030. Do you agree with this assessment, or do you think I'm being overly optimistic?...
Dec 6, 2019
[From the last episode: We looked at the role of interrupts in a processor, and how they help save energy in battery-powered IoT devices.] OK, time to take a breath. We'€™ve covered a wide range of computing concepts; time for a quick review. We started by looking at the ro...