What clearance should be used

[Pulsie dev team]

We are using the STM32WBA5MMG in our design but because of space and the shape of the board we need to be very precise with our components. 

The issue i'm having is with the documentation of the clearance required for the STM32WBA5MMG.

In document “DS14801 @6.4 schematics and layout for pcb” the clearance on the left side of the package is 1.93mm from the side of the package

But in “AN6305 @figure 35 to 39” the clearance on the side of the package is 1.93mm from the left side of pin 72.

We are going to use the STM32 with the +10dB for Bluetooth and need the best option but also need to fit a lot of components on the PCB.

 

Q.

What clearance do i need to follow for the best Bluetooth signal, clearance in AN6305 or DS14801?

[Imen.D]

Hello ​@Pulsie dev team ,

I am checking this internally with the Wireless team (through ticket CDM0063610) and we get back to you with updates.

[Imen.D]

Hi ​@Pulsie dev team ,

After an internal check, the AN6305 is more accurate on the clearance point.

Please refer to the attached zip file with drawings. 

[Pulsie dev team]

Thank you this helpes us very much