Home / Products / Sensor Interfaces / PCAP01 Capacitance-to-Digital Conversion Digital Signal Processor

Features

  • Dedicated ports for precision temperature measurement (with Pt1000 sensors)
  • Serial interfaces (SPI or I2C compatible)
  • Single power supply (2.1 to 3.6 V)
  • RISC processor core using Harvard architecture:
    48 x 48 bit RAM Data, 4k x 8 bit volatile program memory, 4k x 8 bit non-volatile (OTP) program memory

Benefits

  • Digital measuring principle in CMOS technology
  • Up to 8 capacitances in grounded mode
  • Up to 4 capacitances in floating mode (potential- free and with zero bias voltage)
  • Compensation of internal (grounded) and external parasitic capacities (floating)
  • High resolution: up to 6 aF at 5 Hz and 10 pF base capacitance, or 17 bit resolution at 5 Hz with 100 pF base capacitance and 10 pF excitation
  • High measurement rate: up to 500 kHz
  • Extremely low current consumption possible:
    Down to 4 µA at 3 Hz with 13.4 bit resolution
  • High stability with temperature, low offset drift (down to 30 aF per Kelvin), low gain drift when all compensation options are activated.

Applications

  • Humidity sensors
  • Position sensor
  • Pressure sensors
  • Force sensors
  • Acceleration sensors
  • Inclination sensors
  • Tilt sensors
  • Angle sensors
  • Wireless applications
  • Level sensors
  • Microphones
  • MEMS sensors