• Precision Measurement Technologies
  • Technology Center for

PICOCAP: Capacitance Measurement

Picocap Pcap01 Capacitance Measurement chip

The Most Flexible Solution in Direct Capacitance-to-Digital Conversion

The patended PICOCAP 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. PICOCAP also provides a powerful combination of performance and accuracy with the option for ultra-low current applications.

Advantages

  • 2 channels with typ. 50 ps rms resolution
  • 65 ps Bin size
  • Measurement range 3.5 ns to 1.8 ┬Ás
  • 15 ns pulse-pair resolution with 4-fold multihit capability
  • 4 events can be measured arbitrarily against each other
  • Windowing for precise stop enable

Applications

  • Humidity sensors
  • Pressure sensors
  • MEMS
  • Acceleration sensors
  • Inclination sensors
  • Freefall sensors
  • Position sensors
  • Touch sensors
  • Angle sensors
  • Level sensors
  • Microphones

Block Diagram

Package Outline

Additional Information