Si7005 Digital Relative Humidity and Temperature Sensor

Note: the Si7005 devices remain in production, but are not recommended for new designs. For new designs, please use the 2nd generation Si701x/2x Humidity Sensors instead.

The Si7005 digital relative humidity and temperature sensor integrates humidity and temperature sensor elements, an analog-to-digital converter and signal processing in a single monolithic CMOS sensor IC. Both the humidity and temperature sensors are factory-calibrated and the calibration data is stored in on-chip non-volatile memory. The Si7005 humidity and temperature sensor is packaged in a 4 mm x 4 mm QFN package and is reflow solderable.

 

Features

  • Relative Humidity Sensor:
    • ± 4.5% RH (maximum @ 20–80% RH)
  • Temperature Sensor:
    • ±0.5 ºC accuracy (typical)
    • ±1 ºC accuracy (maximum @ 0 to 70 °C)
  • 0 to 100% RH operating range
  • Up to -40 to +85 °C operating range
  • Wide operating voltage range (2.1 to 3.6 V)
  • Low Power Consumption: 240 μA during RH conversion
  • I2C host interface
  • Integrated on-chip heater
  • 4 mm x 4 mm QFN package
  • Excellent long term stability
  • Factory calibrated
  • Optional factory-installed filter/cover
    • Low-profile
    • Protection during reflow
    • Excludes liquids and particulates (hydrophobic/oleophobic)

Si7005 Product Matrix

Devices
Part Number Data Sheet Description Temp. Accuracy max (°C) RH Accuracy (max) Temperature Range (°C) Filter Cover Package Format Package Type
Not Rec for New Designs - Use Si7020 ±1 ±4.5% 0 70 No Tube QFN24
Not Rec for New Designs - Use Si7020 ±1 ±4.5% 0 70 Yes Cut Tape QFN24
Not Rec for New Designs - Use Si7020 ±1 ±4.5% -40 85 No Tube QFN24
Not Rec for New Designs - Use Si7020 ±1 ±4.5% -40 85 Yes Cut Tape QFN24
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