Fourth Generation Automotive-Grade Relative Humidity and Temperature Sensor with CMOSens Technology

Published  June 10, 2022   0
L Lakshita
SHT4xA Digital Automotive Sensor

Sensirion has introduced the new digital automotive sensor SHT4xA that is based on Sensirion’s CMOSens Technology and meets the most demanding reliability requirements, such as accelerated lifetime tests at 85°C / 85 %RH. Specifically designed for automotive applications, this sensor is available in different accuracy classes with an I2C or pulse width modulation interface and an integrated heater that enables chip self-diagnostics throughout its operating life.

This sensor features an operating voltage range of 2.3 to 5.5 V and accuracy tolerances down to ±2 %RH and ±0.2°C which is achieved over the full measurement range of 0%RH to 100%RH and from -40°C to 125°C. Moreover, optional protection options using an applied membrane or protective film provide splash water protection or facilitate processing during production.

Key Features

  • Relative humidity accuracy: up to ±2 %RH

  • Temperature accuracy: up to ±0.3 °C

  • Supply voltage: 2.3 V … 5.5 V

  • I2C fast mode plus, CRC checksum

  • Pulse-width modulation interface

  • Designed for 85°C/85%RH reliability testing

  • Operating range: 0…100 %RH, -40…125 °C

  • Fully functional in condensing environment

  • Variable power heater

  • AEC Q100 qualification, high-reliability design

  • Mature technology from global market leader

  • Patented protection options