ANT (H23) pin connection

[Jagbir]

I am not using any wireless radio in my application with nRF52840 . What is the best practice to terminate ANT(H23) pin.Shall I connect it to the ground/pull up or leave it un-connected.

Thanks.

[Andreas]

Hi,

 

We do not expect any difference if it is grounded, floating or terminated with 50 Ohm. It is DC short to ground though so you should not pull it up.

 

Best regards,

Andreas

[Jagbir]

Will it be a problem if we externally terminate this pin to the ground.

[Andreas]

Hi,

 

No, not if you do not plan on using the radio.

 

Best regards,

Andreas

[Jagbir]

Using same rationale can I terminate NFC1/NFC2 to the ground ?

[Andreas]

Hi,

 

GPIOs, including the NFC-pins are slightly different they are disconnected internally if not used so even less point in disconnecting them. It will not cause any issues though.

 

Best regards,

Andreas