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New app note on CC2538: power consumption measurement and optimizations using Z-Stack

Other Parts Discussed in Thread: Z-STACK, CC2538

Hi Z-stack fans,

I am pleased to announce that we just published an application note which describes power consumption numbers and optimization settings when using Z-Stack, running on top of CC2538 device .

Please see the following link for more information: http://www.ti.com/general/docs/litabsmultiplefilelist.tsp?literatureNumber=swra456

The link provides you access to both the application note document as well as a tool to compute the average current consumption and battery life of your system based on CC2538. The tool, based on an excel spreadsheet, gives you the flexibility to adjust the settings as per your application use-case (number of packets per day, polling rate, etc), allowing what-if simulation and analysis.

For the reasons above, we do believe this tool is going to be extremely helpful when making overall system design considerations and we want to help our customers integrating our parts.

Thanks again and please stand by for more announcements to come soon.

TheDarkSide

  • Very detailed breakdown of unit operation shows not only how much current each sub unit operation consumes but also how long each takes. It helps understanding how the device works internally. Awesome!

    - Cetri

  • A good helpful document. Thanks!

  • In this document, my doubt is how power is measured as current x time_duration?
    Its given (mA x ms)
    with refernce to figure9 and table2 of this document, what sense does that make?
  • Yes, Technically mAxms is a representation of the amount of charge that needs to be provided by a battery to perform the operation listed in Figure 9, and the unit is therefore 'charge' (or Joule/Volt, and not power).
    The table summarizes the current (proportional to the voltage drop on the resistor) and the time it takes to perform a specific operation. The area below that curve (divided by the measuring resistor which is constant), represents the amount of charge necessary and it is therefore directly related to the battery capacity, expressed typically in mAh.

    Thanks,
    TheDarkSide