• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 30 subscribers
  • Views 443 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

AWR1843: VIN_13RF Pin

Neal Zhu
Expert 2470 points
Part Number: AWR1843

Hi,

1. How to use VOUT_PA when VIN_13RF is 1V? In the schematic diagram, 1V voltage is fed into VOUT_PA.

2. When VIN_13RF is 1.3v, can the three-way transmission channel of AWR1843 work in time?According to the official website information, what I understand is that under the 1V power supply mode, it can guarantee the simultaneous operation of three transmitting channels.

The 3-way chip should still work when the power supply is 1.3v.It's just that you can't launch all three at once. It's possible if we use three.

3. At present, our circuit design refers to the schematic diagram of the official website.VIN_13RF is 1V, and 1V is supplied to VOUT_PA, but the chip cannot be started at present, only the program can be burned.

However, when the program runs in the waveform output, it will be directly interrupted.All voltage measurements are normal. It is not clear why the chip does not work when 1V is supplied.

Thanks!

  • 0
    TI__Mastermind 30715 points

    Hello,

    1. Yes, when RF1/RF2 are supplied with 1V, you should connect VOUT_PA to the 1V supply.

    2. Yes, you are correct. 1V supply with VOUT_PA connected to the 1V supply is required for simultaneous 3TX operation, but if you do not plan to use all three TX simultaneously you can use 1.3V and leave VOUT_PA disconnected. 

    3. If you supply with 1V and connect to VOUT_PA, you need to disable the internal LDO using the RFLDO_BYPASS_EN API.

    Regards,

    Adrian