Chip Antenna Connection with QFN package nRF4122

RE: Chip Antenna Connection with QFN package nRF4122

Andreas — Wed, 23 May 2018 08:27:34 GMT

Hi,

BAL-NRF01D3 is an older part intended for nRF24-series and revision 1 of nRF51-series. BALF-NRF01D3 has an integrated harmonic filer for improved spurious rejection for revision 3 of nRF51-series and is therefore recommended over BAL-NRF01D3.

Best regards,

Andreas

RE: Chip Antenna Connection with QFN package nRF4122

HLR — Tue, 22 May 2018 13:44:14 GMT

Thanks for the reply

what is the difference between BAL-NRF01D3 and BALF-NRF01D3 ?

Losses differ so is it recommended to use BAL-NRF01D3 ?

RE: Chip Antenna Connection with QFN package nRF4122

Andreas — Tue, 22 May 2018 11:36:40 GMT

Hi,

The connection is correct, but BAL-NRF02D3 should not be used with the QFN package version. This is a part designed for the WLCSP package versions and their required load impedance and VDD_PA on the other side.

For QFN you should either use BALF-NRF01D3, BALF-NRF01E3 (note the F) or Johanson Technology 2450BM14E0003.

Best regards,

Andreas