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CC2640R2F: Power consumption

Rahul
Intellectual 995 points
Part Number: CC2640R2F
Other Parts Discussed in Thread: ENERGYTRACE

Hi,

This is regarding the overall power consumption details for the CC2640R2F BLE chip.

Here is the little information available with us to share for a better understanding and smooth communication.

> We have developed a module using CC2640R2F chipset.

> Module output power can be set tp 0dB and 5dB

> Module current measurement is taking through the Smart RF tool & DMM.

0dB Power details


TX Current: 9.2mA

RX Current: 7.8mA

5dB Power detail

TX Current: 12.6mA

RX Current: 7.8mA

Since our design BLE module us going to operate it on a battery, So we would need the overall actual current details to calculate the battery life/runtime.

> I need to know about the BLE idle current?

> Can I use the same Smart RF tool to measure the idle current?

> How do I make the setup to measure the current?

Regards,

Rahul

  • 0
    TI__Guru* 85681 points

    Have you looked at this?

    Siri

  • 0 in reply to Siri
    Intellectual 995 points

    Hi,

    Thanks for your quick response.

    When we measure we always get 1.5mA in our custom Module board. Please suggest me the method of measuring the lower current values.

    Additional Inputs, software

    I am using project zero code from sdk_3_30_00_20 blestack examples. I have removed UARTLOG_ENABLE and added custom UART for sending and receiving data. POWER_SAVING is enabled. Advertising interval is 1000ms. When i measured current with multimeter current was about 1.5mA most of the time, every 1 second current shoots up to 7mA(0Db). Current consumption of 1.5mA is normal behaviour or is it possible to still reduce current consumption?. Can you please assist me in this situation.

     

    Regards,

    Rahul

  • 0 in reply to Rahul
    Guru 86745 points

    Hi,

    Use, simple peripheral for your BLE Power Measurement test. What you can do first is put the device in shutdown mode to see if the current consumption is within acceptable levels.

    For battery life you can use EnergyTrace or much better a DC Power Analyzer from the document TI Siri shared.

    -kel