Hi TI experts,
Now customer has using the CC1121 for their application and some of CC1121 has been broken by something on field test. The resistance value between PA pin and GND is from 10 ohm to 30 ohm. So it seems that this pin is shorting. So we got some questions from my customer about PA pin. Would you please provide your answer for them?
Question.1:
Can customer think those CC1121 is broken by this checking?
Question.2 :
Would you please show us the surge resistance specification of PA pin?
Question.3:
Do you have any solution for protection circuit on PA pin?
Note: The supplied power source for their system is battery. So they did not add the varistor. If you have some good solution of protection circuit for battery operating application, please provide it.
Question.4:
Would you please show us the expected/possible failure mode on PA pin? And would you please point out the possible internal block on CC1121?
Question.5 :
Can CC1121 receive the data correctly even though the PA pin is this condition? According to my customer, those CC1121 could transmit the data but the power consumption is very high.
If you have any questions, please let me know.
Best regards.
Kaka