Data Sheet

© NXP Laboratories UK 2012 JN-DS-JN5142 1v0 29
Antenna A
Antenna B
A
B
COM
SEL
SELB
ADO (DIO[12])
ADE (DIO[13])
Device RF Port
RF Switch: Single-Pole, Double-Throw (SPDT)
Figure 16: Simple Antenna Diversity Implementation using External RF Switch
ADO (DIO[12])
TX Active
RX Active
ADE (DIO[13])
1st TX-RX Cycle 2nd TX-RX Cycle (1st Retry)
Figure 17: Antenna Diversity ADO Signal for TX with Acknowledgement
If two DIO pins cannot be spared, DIO13 can be configured to be a normal DIO pin, and the inverse of ADO
generated with an inverter on the PCB.