ChipCap®2 a Fully Calibrated Humidity and Temperature Sensor


ChipCap® 2 offers the most advanced and cost effective humidity and temperature sensing solution for virtually any type of application. A capacitive polymer sensor chip and a CMOS integrated circuit with EEPROM are integrated into one embedded system in a reflow solderable SMD package.

Individually calibrated and tested, ChipCap® 2 performs at ±2% from 20% to 80% RH (±3% over entire humidity range), and is simple and ready to use without further calibration or temperature compensation.

ChipCap® 2 provides linear output signals in various interfaces to customer requirements:

  • I²C interface
  • PDM convertible to analog signal
  • Alarm function for preset control at min/max humidity


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  • Fully Calibrated & Temperature Compensated
  • Digital or Analog Output with Alarm Function
  • Precision & Accuracy (±2%RH, ±0.3°C, 14 bit )
  • Free Operating Voltage (min 2.7V to max 5.5V)
  • Low Current Consumption
  • SMD Package for Automated Assembly
  • Reliable in Harsh Environments


  • Energy Saving HVAC Control —Air Conditioning, Refrigeration, Indoor Air Quality, Vent Fans, Home Appliances, Humi/Dehumidifiers
  • Process Control & Instrumentation—Medical Instruments, Handheld Devices, Weather Stations, Food Processing, Printers, RFIDs
  • Automobile & Transportation—Cabin Climate Control, Defogging Control Condensing Preventive Device
  • Medical — Nebulizers, Oxygen air, CPAP/Sleep Apnea devices
  • OEM assemblies available


Relative Humidity RH(%)

Resolution 14 bit (0.01%RH)
±2.0 %RH (20~80%RH)
Repeatability ±0.2 %RH
Hysteresis ±1.0 %RH
Linearity <2.0 %RH
Response time
4.0 sec
Temp Coefficient

0.05%RH/C @ 50%RH (at 10-60°C)

0.15%RH/C @ 90%RH (at 10-60°C)

Operating Range 0 ~ 100 %RH (Non-Condensing)
Long Term Drift  

1. Custom Accuracy Tolerance Available

2. Accuracies measured at 25°C, 5.0V

3. Measured at 25°C, 1m/sec airflow for achieving 63% of step from 33%RH to 90%RH




Temperature (°C)

Resolution 14 bit (0.01°C)
Accuracy1 ±0.3°C
Repeatability ±0.1°C
Response time2 5.0 sec (τ 63%)
Operating range - 40 to 125°C
Long term drift <0.05°C/yr (Normal condition)

1. Accuracies measured at 25°C, 5.0V

2. Min 5.0 sec, Max 20 sec



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