3.4.2 Detect Integration (DI)

Detect integration is a simple yet very effective technique to tackle high noise. DI helps to confirm that the variations in touch measurements are caused by a valid finger touch made by doing confirmation scan(s) (repeated measurements). The touch is reported only when the touch measurement data is consistent. These additional confirmation scans are performed back-to-back to preserve touch interface snappiness.

Increasing the DI increases the number of confirmation scans and improves the robustness of touch detection. However, a higher DI can also lead to increased response time, making it crucial to select an optimal DI level that meets noise requirements. DI is also applied to verify when a touch is removed.

Here, only two buttons are enabled, with DI configured as three. Once a touch is detected, button 0 will do three more measurements to confirm the touch. Refer to the below image.