PCAP02 Capacitance-to-Digital Converter

Low-power CDC with integrated signal processor


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


  • 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 parameters

Channels 8
Noise [aF@10pF] 15
Max. Rate [SPS] 500000
Operating Supply Range [V] 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

General Description

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 500kHz, lowest current consumption down to 2µA 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.

This product suits for the following applications:

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


Title Category Headline Buy
PCAP02EvalKit Application Board Evaluation Kit for PCAP02

Technical Documents

Type Description Language
Datasheet Volumes 1+2; 1.6 / 0.2 English
Application Note Linearization firmware English


Type Description Language
Product Change Notification Change Notification_MOQ Amendment_PCAPx_TDC-GPx_PS09FN (issued 2017-Mar) English
Product Change Notification CN13-2017 (PCAP0x, TDC-GPxx, PS09) English

Other Information

Type Description Language
Block Diagram PCap02 Block Diagram English
Factsheet ICs for Capacitive Sensing Applications English

Ownership of this product has moved to Sciosense

Please be informed that this product is now owned by Sciosense B.V., a joint venture of ams AG and Wise Road Capital, effective January 13th, 2020.

ScioSense Environmental Sensors