Understanding EMC Conducted Immunity for Capacitive Touch Panels


Maxime Fazilleau, Application & Product Engineer, Anders DX

One of the main concerns for capacitive touch circuits that are used for delivering User Interfaces for products is conducted noise immunity (or CNI). In this workshop we will be discussing what CNI is, how noise is generated and its possible effects on the end product. We will suggest ways of detecting CNI and resolving issues, but more importantly, why it is important to consider EMC regulations from the very start of any project. The session will include an introduction to design recommendations, prevention guidelines and compliance tests.


1. What is CNI and how it affects Capacitive Touch Panel based products.

2. How to address EMC implications when starting up your design using Capacitive Touch Panels.

3. How CNI can be mitigated during pre-qualification stage if detected.