SI7020-A20

Si7020-A20 I2C HUMIDITY AND TEMPERATURE SENSOR Features  Precision Relative Humidity Sensor  Factory-calibrated  ± 4% 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  Up to –40 to +125 °C operating  Optional factory-installed cover range Low-profile  Wide operating voltage (1.9 to 3.6 V)  Low Power Consumption Protection during reflow Excludes liquids and particulates 150 µA active current 60 nA standby current Ordering Information: See page 29. Applications  HVAC/R  Thermostats/humidistats  Respiratory therapy  White goods  Indoor weather stations  Micro-environments/data centers  Automotive climate control and defogging  Asset and goods tracking  Mobile phones and tablets Description The Si7020 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 term stability. The humidity and temperature sensors are factory-calibrated and the calibration data is stored in the on-chip non-volatile memory. This ensures that the sen...