ST STM32F0 Series

Figure 19. Shield
Ground plane or
ground track
Touchkey bank 2
Any application track
(LED, power, Com.)
At least twice the
panel thickness
As thin as
PCB
technology
allows
At least
twice the
track width
Top layer
Bottom layer
Sense plate
Active shield
3 x W
Track width (W)
Ground plane
Track width
(W)
~ 0.21
3-4 mm
Top layer Bottom layer
AN5105
Layout and PCB
AN5105 - Rev 1
page 19/52