Capsense sensitivity drift silicium production

[Rulio12]

Hello,

We use for a medical device Capsense systems on PSOC4, we constate variation of sensitivity of the system for diferent reason : mechanical, environement, liquids, thikness of treatment on alu, different kind of plastic, coax wiring for transmiting signal ...

For quantify all this system variations and drift in production what is the part of influence of MCU PSOC4 chip-it self? Clocks, IDAC, Compartor, etc...?

What kind of difference we could impute to series of semiconductor batch? Only criteria of sensitivity variation.

Best regards

[LinglingG_46]

Could you details your concern?

The consistency of mass production needs to be guaranteed by the factory.

We only can reply to your technical questions

[Roy_Liu · Accepted solution]

I would recommend you to read this article to understand the Capsense fundamental and design practice.

https://www.cypress.com/documentation/application-notes/an64846-getting-started-capsense

Semiconductor batch does not matter Capsense sensitivity.