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SI7021 Description

The Si7021 I2C 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 an I2C Interface. The patented use of industry-standard, low-K polymeric dielectrics for sensing humidity enables the construction of low-power, monolithic CMOS Sensor ICs with low drift and hysteresis, and excellent long...

SI7021 Key Features

  • Precision Relative Humidity Sensor
  • Factory-calibrated
  •  ± 3% RH (max), 0-80% RH
  • I2C Interface
  • High Accuracy Temperature Sensor
  • Integrated on-chip heater
  • ±0.4 °C (max), -10 to 85 °C
  • 3x3 mm DFN Package
  • 0 to 100% RH operating range
  • Excellent long term stability