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Application NoteInfineon

Infineon PSoC 4 and PSoC 6 CAPSENSE Design Guide

Design guide for capacitive touch sensing with PSoC 4 and PSoC 6 MCUs. Covers CSD/CSX methods, 5th gen technology, SNR optimization, and liquid tolerance for buttons and sliders.

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Overview

This application note (AN85951) provides comprehensive guidance for designing capacitive touch sensing applications using Infineon PSoC 4 and PSoC 6 MCUs. It details the CAPSENSE technology suite, including CapSense Sigma-Delta (CSD) and Crosspoint (CSX) sensing methods, alongside the 5th Generation ratiometric sensing technologies (CSD-RM and CSX-RM). The document covers hardware design for various sensor types such as buttons, sliders, touchpads, and proximity sensors, while emphasizing performance optimization through Signal-to-Noise Ratio (SNR) tuning and liquid tolerance techniques. It also includes an overview of development tools, including PSoC Creator and ModusToolbox, for component configuration and system debugging.

Use Cases

  • Home Appliances
  • Industrial Control Panels
  • Automotive HMI
  • Wearable Devices
  • Consumer Electronics
  • Water-resistant Touch Interfaces

Topics

CAPSENSE
PSoC 4
PSoC 6
Capacitive Touch
CSD
CSX
Liquid Tolerance
SNR Tuning
Infineon
AN85951
Proximity Sensing
CSD-RM

Referenced Parts

VBUS05L1-DD1

Vishay

Vishay VBUS05L1-DD1 0.3 pF 0.1 μA ±15 kV ±16 kV

PSOC 4

Infineon

The CAPSENSE™ design guide explains how to design capacitive touch sensing applications with the CAPSENSE™ feature in PSOC™ 4 and PSOC™ 6 MCU device families.

PSOC 6

Infineon

The CAPSENSE™ design guide explains how to design capacitive touch sensing applications with the CAPSENSE™ feature in PSOC™ 4 and PSOC™ 6 MCU device families.

SP723

Littelfuse

Littelfuse SP723 5 pF 2 nA 8 kV 15 kV

NUP1301

NXP

NXP NUP1301 0.75 pF 30 nA 8 kV 15 kV

Infineon PSoC 4 and PSoC 6 CAPSENSE Design Guide | Design Resources