12 Channel TouchXpress Capacitive Touch Controller

MFG Part #:


Part #:
Lead Time 26 weeks
RoHS Status:
Unit Price:$1.05
Minumum Qty: 1
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Product Information

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The CPT212B device, part of the TouchXpress family, is designed to quickly add capacitive touch via an I2C interface by eliminating the firmware complexity and reducing the development time for capacitive sensing applications.

Supporting up to 12 capacitive sensor inputs in packages as small as a 3 mm x 3 mm QFN, the CPT212B is a highly-integrated device that interfaces via I2C to the host processor to provide a simple solution for adding capacitive touch. The device also comes with advanced features like moisture immunity, wake-on proximity, and buzzer feedback for an enhanced user experience. No firmware development is needed, and all the capacitive touch sense parameters can be configured using a simple GUI-based configurator. By eliminating the need for complex firmware development, the CPT212B device enables rapid user interface designs with minimal development effort.

The CPT212B device is ideal for a wide range of capacitive touch applications including the following:
• Home appliances
• Instrument / Control panels
• White goods
• Medical equipme
• Consumer electr
• Lighting control

Symmetry Electronics is an authorized Silicon Labs distributor.


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No firmware development required
Simple GUI-based configurator
12 Capacitive Sensor inputs with programmable sensitivity
I2C interface to communicate to and configure from the host
Lowest power capacitive sense solution
Active 200 A
Sleep 1 A
Wake on proximity
Superior noise immunity: SNR up to 270:1
Moisture immunity
Mutually-exclusive touch qualifier
Buzzer output for audible touch feedback

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