AWR6843: AWR6843 Tx output power

GIL JAE LEE

Prodigy 50 points

Part Number: AWR6843

I have a question about the AWR6843 Tx power.

1. Is the output Tx power of the output pins (Tx1, Tx2, Tx3) of AWR6843 calibrated at the time of shipment?

2. Tx power is 12dBm(Typ). What about min and max?(Tolerance)

over 2 years ago

0 E. Shareef over 2 years ago

TI__Genius 15890 points

Hello,

Thank you for reaching out to Texas Instruments.

1. No, device is not calibrated at time of shipment.

2. 12dBm is the max power expected. The power can be lower depending on a wide variety of configurations.

Hope this helps,

-Shareef

0 GIL JAE LEE over 2 years ago in reply to E. Shareef

Prodigy 50 points

There is an additional question.

If it is not calibrated at the chip(AWR6843) level,

1. For example, can I not know how many dBm is actually being output when I set it to 12dbm?

2. It is thought that there will be deviation of Tx output for each port(Tx1,Tx2,Tx3) and each chip.
So, does the user of the chip have to calibrate it?

Thank you.

0 E. Shareef over 2 years ago in reply to GIL JAE LEE

TI__Genius 15890 points

The terminology here is important. TI does RF trimming to make sure o/p power is at 12dB. There will be a +- 2dB variation. User can set backoff upto a max of 20dB for all TX.

Hope this helps,

-Shareef

0 GIL JAE LEE over 2 years ago in reply to E. Shareef

Prodigy 50 points

Thank you for your answer.
Then, can it be said that there is no need for additional compensation for each port (Tx1, Tx2, Tx3) other than setting the output power because of the RF trimming function?

Thank you.

0 E. Shareef over 2 years ago in reply to GIL JAE LEE

TI__Genius 15890 points

12dB is what TI trims the part for. If this works for your application, you wouldn't need to.

Hope this helps,

-Shareef

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AWR6843: AWR6843 Tx output power