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AD9361 TDD Isolation/Leakage Concern

Question asked by mike64b on Jul 4, 2018
Latest reply on Jul 10, 2018 by srimoyi

Hi,

 

we're planning to use the AD9361 in a TDD application where the TX will have a high powered external PA, and even with TX/RX antenna placement isolation we expect the high power TX signal to be present at the RX input port. I have two main questions:

 

1) When in TDD mode and the TX enabled with RX disabled, does this imply that the LNA amp is disabled (i.e. the entire RX chain is disabled) and won't be damaged?

 

2) With that in mind, is the 2.5 dBm absolute maximum RF input rating still the same even when RX is disabled in TDD mode?

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