ams AG - global leader in the design and manufacture of high performance analog ICs (integrated circuits)

PCap02 Capacitance-to-Digital Converter

Low-power CDC with integrated signal processor


Low-power capacitance-to-digital converter with wide input range (from fF to nF) and versatile configuration options.
PCap02 can be configured for highest sampling rates up to 500 kHz, lowest current consumption down to 2 uA or lowest noise of 15 aF (rms).
The internal signal processor allows for power-efficient and fast calculations, e.g. for sensor linearization or complex arithmetics.

Key Features

  • Wide input range (fF to nF)
  • Low noise (15 aF rms)
  • High update rate up to 500 kHz
  • Low current consumption down to 2 uA
  • Internal signal processor

Key Benefits

  • Enables platform designs (one part - different configurations)
  • Enables compact designs due to internal signal processor
  • Allows for low-power designs, e.g. wireless applications
  • Enables mutli-channel designs (up to 8 sensors)

Product Facts

Channels 8
Noise 15 aF @ 10pF
Max. Rate 500000
Operating supply range 2.1 to 3.6
Interface SPI, I²C, PDM, PWM
CPU 48-bit
Memory 4k OTP
Ambient temperature range [°C] -40 to +125
Package QFN32

Additional Information

  • Humidity sensors
  • Dewpoint sensors
  • H / T / P combo sensors
  • Pressure sensors
  • Fill level sensors
  • MEMS sensors