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STTS22H - High Accuracy Temperature Sensor with Low Operating and Standby Current

STTS22H - High Accuracy Temperature Sensor with Low Operating and Standby Current
STTS22H - High Accuracy Temperature Sensor with Low Operating and Standby Current

The STMicroelectronics introduced STTS22H, a temperature sensor that can read with an accuracy of 0.25°C with low operating and standby current. The STTS22H is I2C and SMBus 3.0 compliant, it supports flexible operating mode, 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 to operate as an SMBus slave and to signal the application if a user-programmed upper or a lower temperature threshold is exceeded. Programmable I²C/SMBus slave addresses allow up to two STTS22H sensors to share the same bus.

                                                                              

Features of STTS22H Temperature Sensor:

  •  Factory calibrated and One-shot mode for power saving
  • Supply voltage: 1.5 to 3.6 V
  • Programmable thresholds with interrupt pin
  • Supports up to 1 MHz serial clock
  • Up to 2 I²C/SMBus slave addresses
  • Very low power consumption of 2.0µA at 1Hz ODR
  • Ultra-low current: 1.75 µA in one-shot mode
  • Operating temperature -40 °C to +125 °C
  • Temperature accuracy (max.): ± 0.5 °C (-10 °C to +60 °C)
  • 16-bit temperature data output

 

The low power consumption of STTS2H helps to extend the running time of battery-powered devices. The device only draws a mere 0.5 µA in the standby mode with serial port inactive. The sensor is fast-acting with the conversion time of 5ms and provides 16-bit temperature data.  The package is designed with a metal slug that helps in reducing the thermal resistance to ensure fast settling at the ambient temperature.

 

The 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 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. For more details about STTS22H visit the product page on the official website of STMicroelectronics.  

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