DocID024976 Rev 1

9/17

AN4326

Layout rules

16

3

Layout rules

Note:

See AN576.

The layout and placement of the external ESD protection are an important point in the

protection efficiency: the external ESD protection must be placed between the ESD source

(antenna) and the M24LRXXE-R. The external ESD protection must be placed as close as

possible to the ESD source (antenna). The connection between the M24LRXXE-R and the

antenna must start from the ESD protection.

Figure 4. Efficient ESD protection implementation

Figure 5. Wrong ESD protection implementation

Note:

It is also recommended to use a ground plane instead of ground wires.