• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 31 subscribers
  • Views 204 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.

Original question:

IWR1843: Reference temperature for TxGainTempLUT

IWR1843: Reference Temperature Sensor for Gain Temperature LUT

yasuaki oda
Prodigy 250 points
Part Number: IWR1843


Tool/software:

Hello,

I would like to inquire in detail about the questions in the thread(iwr1843-reference-temperature-for-txgaintemplut).

I have reviewed the document (spracf4) mentioned in the responses. It states that temperature sensors located near the TX and RX channels are used for boot-time calibration and run-time calibration, but there does not seem to be any mention of the temperature sensors used during LUT generation.

Regarding the IWR1834, please answer the following questions.

Question 1:
Is the average value of the seven sensors (TX0-2, RX0-3) used for boot-time calibration and run-time calibration? Does this mean the PM and DIG0, DIG1 temperature sensors are not used?

Question 2:
Is the average value of the seven sensors (TX0-2, RX0-3) also used for gain LUT generation? Or, is the Rx Gain LUT based on the average value of temperature sensors RX0-3, and the Tx Gain LUT refers to the temperature sensor values for each Tx channel to match the gain LUT software structure?

Question 3:
Are the PM and DIG0, DIG1 temperature sensors not used for the self-calibration function or any other BSS controls?

Best Regards,
Yasuaki

  • 0
    TI__Mastermind 20090 points

    Hello.

    I am looking into this and will provide an update by the end of the day Wednesday.

    Sincerely,

    Santosh

  • +1 in reply to Santosh Krishnan
    TI__Mastermind 20090 points

    Hello.

    yasuaki oda said:

    Question 1:
    Is the average value of the seven sensors (TX0-2, RX0-3) used for boot-time calibration and run-time calibration? Does this mean the PM and DIG0, DIG1 temperature sensors are not used?

    Question 2:
    Is the average value of the seven sensors (TX0-2, RX0-3) also used for gain LUT generation? Or, is the Rx Gain LUT based on the average value of temperature sensors RX0-3, and the Tx Gain LUT refers to the temperature sensor values for each Tx channel to match the gain LUT software structure?

    Question 3:
    Are the PM and DIG0, DIG1 temperature sensors not used for the self-calibration function or any other BSS controls?

    You are correct for Q1.

    For Q2, I believe the Rx Gain is based only on the Rx sensors, while Tx power is only based on Tx sensors.

    For Q3, these sensors should be monitored along with the RF ANA temp sensors to ensure device temperature doesn't exceed the maximum supported temperature.

    Sincerely,

    Santosh