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CC85xxDK-Headset current consumption in "Network standby" state

SigP
Prodigy 20 points
Other Parts Discussed in Thread: CC2590

Hi,

I've seen that in the new fw release 1.3.0 of CC85xx devices, you've added the new state "Network standby", in which the audio device can be powered down on both input and output, but the network is still mantained.

In this configuration mode, have you done some measures of current consumption on the CC85xxDK-headset board?

Thank you,

Claudio

  • 0
    TI__Expert 7160 points

    Hi Claudio,

    I will answer this soon. Stay tuned.

    -Kristoffer

  • 0 in reply to Kristoffer S
    Prodigy 20 points

    Hi,

    are there some news about current consumption of CC85xx in network standby state?

    Thank you,

    Claudio

  • 0 in reply to SigP
    Prodigy 10 points

    I am also looking for current consumption values of the CC85XX+CC2590 in low power states. The data sheets only list the active current consumption and the power-down state power consumption. Thank you.

    Ken

  • 0 in reply to Ken Morenz
    TI__Mastermind 21125 points

    Hi Ken, 

    The power consumption of the CC85xx and CC2590 will vary depending on the configuration of the device. 
    For the CC85xx itself there are in practice three main power states that affects the current consumption: OFF (power down), ACTIVE and STANDBY. The User Guide do talk about more states (see table 13) but the low-power, local standby and network standby is more or less the same from a power consumption standpoint. 

    In OFF the current consumption is as the datasheet states for power down.
    In ACTIVE it will depend on how the device is configured (master or slave, number of audio channels supported, timeslot lenght, streaming format, number of slaves in the network etc.). All this will change how high radio on time (transmit or receive) within a timeslot is needed and thus directly influence the power consumption. The number in the datasheet is an example for one configuration. 
    In STANDBY the radio on time can be reduced as you are no longer transmitting audio. Network is still maintained and some network information is exchanged. The timeslot stays the same.

    The output power selected for your device will influence ACTIVE and STANDBY current. 

    To give you an idea of the numbers we are talking here:
    With receive (RX) 100% on the CC85xx draws ~28mA and the CC85xx+CC2590 draws ~33mA
    With transmit (TX) 100% on the CC85xx draws ~37mA (+4 dBm output power)  and CC85xx+CC2590 draws ~60mA
    Without radio on, the CC85xx+CC2590 draws ~10mA

    If you want to get an idea of the power consumption for any configuration, scoping the PAEN (TX) and LNAEN (RX) pins will give you an idea.

    The CC85xx can be set up to limit the power consumption of external audio devices in the different stages (in STANDBY one usually shut down external audio devices) etc.

    Hope this helps. 
    Regards,
    Kjetil 

     

  • 0 in reply to Kjetil
    Prodigy 10 points

    Thank you very much Kjetil.