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PicoCap - The most flexible solution in direct Capacitance-to-Digital Conversion


The patended ® measuring principle shows a versatile approach to capacitance measurement. The input capacitance can range between 0fF up to hundreds of nF so there is practically no limit for the capacitor value. This provides high flexibility to the user and allows the same chip to be used in a broad range of sensors. ® also provides a powerful combination of performance and accuracy with the option for ultra-low current applications.


  • Wide input capacitance range from 0fF up to hundreds of nF
  • high resolutions up to 22 bit
  • high measurement rates up to 500,000 samples per second
  • extremely low current consumption with only a few ╬╝A supply current.
  • By simple software configuration the user can select between a high resolution, a high measuring rate or a low-power setup


  • Humidity sensors
  • Pressure sensors
  • Micro-Electro-Mechanical Systems (MEMS)
  • Acceleration sensors
  • Inclination sensors
  • Freefall sensors
  • Position sensors
  • Touch sensors
  • Angle sensors
  • Level sensors
  • Microphones



General Description

General circuit
Cycle Time