ST Microelectronics’ STTS22H digital sensor brings ±0.25°C accuracy to temperature and heat-flow monitoring in wearables, smart phones, and smart home automation, as well as asset and goods tracking. The STTS22H couples a digital temperature sensor with an ADC, signal processing logic, and an I2 C/SMBus 3.0 serial interface in a compact, low-profile package. Factory calibrated, the STTS22H is accurate to within ±0.25°C typical (±0.50°C maximum) over a temperature range of -10°C to +60°C. The sensor draws just 2.0 µA at a 1 Hz output data rate and 1.75 µA during periodic one-shot measurements, helping extend the runtime of battery-powered devices. In standby mode with the serial port inactive, the STTS22H draws only 0.5 µA typical. An operating voltage range of 1.5 V to 3.6 V allows the sensor to work with various power sources, such as a small lithium cell.

Housed in a 2.0×2.0×05.-mm, 6-lead UDFN package, the STTS22H temperature sensor costs $0.49 each in lots of 1000 units.

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