Si7005

Si7005 DIGITAL I2C HUMIDITY AND TEMPERATURE SENSOR Features  Relative Humidity Sensor  I2C host interface ± 4.5% RH (maximum @ 0–80% RH)  Integrated on-chip heater  Temperature Sensor  4x4 mm QFN package ±0.5 ºC accuracy (typical)  Excellent long term stability ±1 ºC accuracy (maximum @ 0 to 70 °C)  0 to 100% RH operating range  Factory calibrated  –40 to +85 °C (GM) or 0 to +70 °C operating range (FM)  Optional factory-installed cover  Wide operating voltage range (2.1 to 3.6 V) Low-profile Protection during reflow Excludes liquids and  Low Power Consumption particulates 240 µA during RH conversion (hydrophobic/oleophobic) Applications  Industrial HVAC/R  Thermostats/humidistats  Respiratory therapy  White goods  Micro-environments/data centers  Automotive climate control and de-fogging  Asset and goods tracking Description The Si7005 is a digital relative humidity and temperature sensor. This monolithic CMOS IC integrates temperature and humidity sensor elements, an analog-to-digital converter, signal processing, calibration data, and an I2C host interface. The patented use of industry-standard, low-K polymeric dielectrics for sensing humidity enables the construction of a low-power, monolithic CMOS sensor IC with low drift and hysteresis and excellent long term stability. Both the temperature and humidity sensors are factory-calibrated and the calibration data is stored in the on-chip non-volatile memory. This ensure...