We have some doubts about the damage on the ADTR TX path (PA) when interfacing an ADAR1000 to it. Our case is that we have an ADAR1000 + ADTR working for RX and TX, we had total control over them via SPI. After some hours at the highest performance in TX and power it down/power it up, there is no output signal in TX mode. Power consumption remains as the expected values, SPI replies properly, the RX path works and we followed the power up and power down sequence by turning on the 5V after the PA_BIAS is on a known value.
We wonder that something might be broken. Do you experience the same problem? How does the ADAR and ADTR show that something is broken (for example, the PA)?