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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

Name Type Description Version Language
PCap02_AN000244_1-00.pdf Application Note Linearization firmware 1-00 English
PCap02_BD000319_1-00.png Block Diagram PCap02 Block Diagram 1-00 English Datasheet Volumes 1+2; 1.6 / 0.2 1-00 English
PICOCAPCapSens_FS000173_1-00.pdf Factsheet ICs for Capacitive Sensing Applications 1-00 English
PCAPx_TDC-GPx_PS09_PD000176_1-00.pdf Other Product Document Change Notification_MOQ Amendment_PCAPx_TDC-GPx_PS09FN (issued 2017-Mar) 1-00 English
PCap02_PD000322_1-00.png Other Product Document PCAP02EvalKit Image 1-00 English
PCap02_UG000261_1-00.pdf User Guide Evaluation system 1-00 English
PCap02_UG000262_1-00.pdf User Guide Assembler SW 1-00 English
PCap02_UG000260_1-00.pdf User Guide Evaluation SW 1-00 English

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