Si7005 - Silicon Laboratories

Si7005 DIGITAL I2C HUMIDITY AND TEMPERATURE SENSOR

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 lo.

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 (hydropho.