Obsolete

Product(s)

- Obsolete

Product(s)

Obsolete

Product(s)

- Obsolete

Product(s)

BT-STA2425

Applications information

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5

Applications information

The following are some suggestions to better implement the BT-STA2425 module in the final

application.

"

The module is usually mounted on a motherboard, so avoid routing tracks with

switching signals below the module. The best would be to have a ground plane beneath

the module.

"

Connect the power supply ground of the module with the other grounds in a star

fashion on the motherboard.

"

Keep the RF ground separate from the module power supply ground - the two grounds

are already connected at one point inside the module. A possible implementation is

shown in Figure 5.

Figure 5.

Ground connections

The RF pin must be connected to an antenna which could be one of those shown in Figure 6

and explained as follows.

"

An antenna directly printed on the PCB

"

An integrated antenna, such as:

–

Antenova 30-30-A5839-01

–

Murata ANCV12G44SAA127

–

Pulse W3008

–

Yageo CAN4311153002451K

"

An external antenna connected by means a SMA connector.

Figure 6.

Types of antenna for the BT-STA2425 module

RF gnd

Supply voltage gnd

Module foot print

Printed-circuit antenna

Integrated antenna

External antenna