Datasheet

50 Document No. 001-66271 Rev. *B CY8C21x34/B CapSense
®
Design Guide
7.2 Design Recommendations
Using a shield electrode effectively extends the detection distance of the proximity sensor. This is particularly helpful
when the proximity sensor must operate in the presence of metal.
A wire sensor increases the beneficial effect of the shield electrode because it can be located farther from the shield
electrode.
Avoid large, solid ground-fill areas inside the proximity sensor, because this decreases the sensitivity.
Slower scan speeds provide increased sensitivity at all distances. For a proximity sensor, the scanning speed should
be very slow.