SI7023-A20

Si7023-A20 HUMIDITY/TEMPERATURE SENSOR WITH PWM OUTPUT Features  Precision Relative Humidity Sensor  Factory-calibrated  ± 3% 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-environments/data centers  Automotive climate control and defogging  Asset and goods tracking  Mobile phones and tablets Ordering Information: See page 18. Pin Assignments Description The Si7023 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 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 senso...