Si7007/22/23 2nd Generation Relative Humidity and Temperature Sensors with PWM Outputs

The Silicon Labs Si7007/22/23 devices are our second generation PWM relative humidity and temperature sensors. All members of this device family combine fully factory-calibrated humidity and temperature sensor elements with an analog to digital converter, signal processing, and two PWM outputs. The Si7022/23 devices are designed for high-accuracy applications, while the Si7007 is targeted toward lower-accuracy applications traditionally using discrete RH/T sensors. 

Designers will appreciate the unique set of features offered by the Si70xx family. With full factory calibration, Si70xx devices require no additional RH/temperature calibration during PCB assembly. For protection against dust, dirt and chemical contaminants during PCB reflow and during device operation, all members of the Si70xx family can be fitted with an optional factory-installed cover. 

The PWM outputs of the entire product portfolio can easily be filtered to produce an analog voltage. Patented use of industry-standard low-K polymer dielectrics provides excellent accuracy and long-term stability, along with low drift and low hysteresis.  

 

 

Features

  • Precision Relative Humidity Sensor:
    • Si7023/21: ± 3% RH (maximum) @ 0–80% RH
    • Si7022: ± 4% RH (maximum) @ 0–80% RH
    • Si7007: ± 5% RH (maximum) @ 0–80% RH
  • Temperature Sensor:
    • Si7022/23: ±0.4 °C accuracy (maximum) @ -10 to +85 °C
    • Si7007: ±1.0 °C accuracy (maximum) @ -10 to +85 °C
  • 0 to 100% RH operating range
  • Up to -40 to +125 °C operating range
  • Wide operating voltage range (1.9 to 3.6 V)
  • 180 µA average current consumption at 2 samples per second
  • Two PWM outputs
    • Simultaneous output of RH and temperature
  • 3 mm x 3 mm DFN package
  • Excellent long term stability
  • Factory calibrated
  • Optional factory-installed filter/cover
    • Lifetime protection during reflow and in operation
    • Protects against contamination from dust, dirt, household chemicals and other liquids
  • AEC-Q100 automotive qualified (Si7022/23)

Si7007/22/23 Product Matrix

Devices
Part Number Data Sheet Dev Kit Description Temp. Accuracy max (°C) RH Accuracy (max) Temperature Range (°C) Filter Cover Package Format Package Type
Si7006-07-EVB Dig RH + Temp Sensor with PWM Output ±1 ±5% -40 125 No Tube DFN6
Si7006-07-EVB Dig RH + Temp Sensor with PWM Output ±1 ±5% -40 125 Yes Cut Tape DFN6
Si7022-23-EVB Dig RH + Temp Sensor with PWM Output ±0.4 ±4% -40 125 No Tube DFN6
Si7022-23-EVB Dig RH + Temp Sensor with PWM Output ±0.4 ±4% -40 125 Yes Cut Tape DFN6
Si7022-23-EVB Dig RH + Temp Sensor with PWM Output ±0.4 ±3% -40 125 No Tube DFN6
Si7022-23-EVB Dig RH + Temp Sensor with PWM Output ±0.4 ±3% -40 125 Yes Cut Tape DFN6
Contact Sales Contact Sales
Close
Loading Results