ChipCap2 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 ¡Ó2% from 20% to 80% RH (¡Ó3% 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






Relative Humidity RH(%)

Resolution 14 bit (0.01%RH)
Accuracy1 ¡Ó2.0 %RH (20~80%RH) 2
Repeatability ¡Ó0.2 %RH
Hysteresis ¡Ó2.0 %RH
Linearity <2.0 %RH
Response time3 7.0 sec (£n 63%)
Temp Coefficient Max 0.13 %RH/¢XC (at 10~60¢XC, 10~90%RH)
Operating Range 0 ~ 100 %RH (Non-Condensing)
Long Term Drift <0.5 %RH/yr (Normal condition)


1. Custom Accuracy Tolerance Available

2. Accuracies measured at 25¢XC, 5.0V

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



Temperature (¢XC)

Resolution 14 bit (0.01¢XC)
Accuracy1 ¡Ó0.3¢XC
Repeatability ¡Ó0.1¢XC
Response time2 5.0 sec (£n 63%)
Operating range - 40 to 125¢XC
Long term drift <0.05¢XC/yr (Normal condition)

1. Accuracies measured at 25¢XC, 5.0V

2. Min 5.0 sec, Max 20 sec