SI7022 - Silicon Laboratories

SI7022 HUMIDITY/TEMPERATURE SENSOR

The Si7022 Humidity and Temperature Sensor is a monolithic CMOS IC integrating humidity and temperature sensor elements, an analog-to-digital converter, signal processing, calibration data, and a PWM output. The PWM output may be filtered to produce an analog voltage output. The patented use of industry-standard, low-K polymeric dielectrics for sensing humid.

Features

 Precision Relative Humidity Sensor
 Factory-calibrated
 ± 4% RH (max), 0
  –80% RH
 PWM Output
 High Accuracy Temperature Sensor
 3x3 mm DFN Package
±0.4 °C (max),
  –10 to 85 °C
 Excellent long term stability
 0 to 100% RH operating range
 Optional factory-installed cover

  –40 to +125 °C operating range
Low-profile
 Wide operating voltage
Protection during reflow (1.9 to 3.6 V)
Excludes liquids and particulates
 Low Power Consumption Applications
 HVAC/R
 Thermostats/humidistats
 Respiratory therapy
 White goods
 Indoor weather stations
 Micro-environme.