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AWR2243: AWR2243P power consumption in TX and RX modes

Jonathan Jones2
Intellectual 680 points
Part Number: AWR2243

Dear TI support,

Would be able to let me know the average power consumption of the AWR2243P in the following scenarios:

1. Transceiver powered and active but not transmitting or receiving (power consumption between chirps) (Master/Slave mode)

2. Transceiver receiving on 4 RX channels with transmitter PA disabled/off (Master/Slave mode)

3. Transceiver receiving on 1 RX channel with transmitter PA disabled/off (Master/Slave mode)

4. Transceiver transmitting on 3 TX channels with receive path / ADC disabled (Master/Slave mode)

5. Transceiver transmitting on 1 TX channel with receive path / ADC disabled (Master/Slave mode)

If you don't have the exact information but can provide block level power consumption necessary to calculate power consumption in these modes that would also be helpful.

I appreciate your help with this.

Yours faithfully,

Jonathan

  • 0
    TI__Mastermind 31680 points

    Hello Jonathan,

    Thankyou for your interest. I would need some time to pull these numbers out for you. Let me get back to you by tomorrow.

    Regards,

    Ishita

  • 0 in reply to Ishita Kochar
    TI__Mastermind 31680 points

    Hello Jonathan,

    Sorry for the delay. I was not able to get in touch with the internal team due to holidays, should be able to get back by next week.

    Regards,

    Ishita

  • 0 in reply to Ishita Kochar
    TI__Mastermind 31680 points

    Hello Jonathan,

    Please find the numbers for your asked scenarios below:

    1. The power consumed between chirps is highly dependent on the chirp configuration. If the chirp Idle time is >10us, the power savings are higher.     
      1. Say for example, if your chirp Idle time is 5us, then the power is saved by turning off the RF2 power rail, so the total power will be close to case 2 below.
      2. If your chirp Idle time is >10us, power is saved by turning off the entire 1V rail and saving some power on the 1.8V rail as well.

    2.  When the transmitter chain is disabled, there would be no current on the VIN_13RF2 rail. Hence there would be reduction of around 580-600mW from the total power mentioned for Master (3TX,4RX ON) in Table 8-4 of the datasheet
    3. With only 1RX, the power should be reduced by a number of 700mW from the total power mentioned for Master (3TX,4RX ON) in Table 8-4 of the datasheet.
    4. With 3TX ON and RX OFF, there should be a reduction of around 180mW from the total power mentioned for Master (3TX,4RX ON) in Table 8-4 of the datasheet.
    5. With 1TX ON and RX OFF, there should be a reduction of around 550-570mW from the total power mentioned for Master (3TX,4RX ON) in Table 8-4 of the datasheet.

    Please note : These numbers are for a typical usecase (i.e Average numbers, at room temp 25C, assuming 1V internal bypass mode) and are subjected to vary with process and temperature variations. Also, these numbers are for a 50% duty cycle usecase (i.e the device is chirping for only 50% of the total frame time).


    Hope the above information is useful.

    Regards,

    Ishita

  • 0 in reply to Ishita Kochar
    Intellectual 680 points

    Hello Ishita

    Thank you very much for your detailed response. 

    That was exactly the information I needed.

    Best regards

    Jonathan