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CC2745R10-Q1: TX power consumption mesure at 10dBm.

Weli
Expert 1175 points

Part Number: CC2745R10-Q1
Other Parts Discussed in Thread: SYSCONFIG

Hi Sir.

We have see the CC2745R10 RX current about 6.1mA and TX current at 10dBm about 24.5mA.

QQ_1762922584634.png

For the current values ​​mentioned above, what sample code did you use to measure them? I used a launch pad and used the HCI command in the data stream to switch between transmit and receive modes. The current values ​​were:
TX CW +10dBm 36.04mA
RX 7.35mA
We used DC-DC mode.

How can I ensure the launch pad's current matches the datasheet? Can you give me some suggestions?

 

Thanks.

 

 

  • 0
    TI__Intellectual 1930 points

    Hello,

    You should not need to modify any code, you can use the basic_ble example in the peripheral role to monitor current measurements. You can use sysconfig to adjust advertising intervals and Tx power to see periodic advertisements (Tx packets) going from the device. Please refer to the steps below:

    1. program device with desired settings

    2. disconnect the launchpad from the XDS, and remove all LED jumpers from the launch pad

    3. supply a 3.3V and GND connection from external DC power supply, and measure the current over desired interval

    For reference, we use a DC power analyzer to measure current. This lets us externally supply power and captures current measurements.

    Thanks,

    Eshaan

  • 0 in reply to Eshaan Tibrewala
    Expert 1175 points

    Hi Eshaan sir.

    Sorry for the late reply.

    I have a CC2745 LP, but we replaced the IC. I'm worried that replacing the chip might cause abnormal TX power consumption, so I bought a new CC2745. I've now tested the new CC2745 LP using data stream, and I found that its peak current is still 42mA,

    while the datasheet states 24mA. How can I make the TX power consume only 24mA at 10 dBm?

  • 0 in reply to Weli
    TI__Intellectual 1930 points

    Hello Weli,

    Please give me about a week to run tests internally so that I can verify the issue and get back to you.

    Thanks

  • 0 in reply to Eshaan Tibrewala
    Expert 1175 points

    Hi Eshaan,

    I’m glad to hear that.
    Please keep me informed of any updates. In the meantime, we can also run parallel tests and perform verification on our side to stay aligned.

    Thank you, and I look forward to your feedback.

    Best regards,
    Weli