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AWR1843AOP: suitability of AWR1843AOP for wearable battery operated device

Mahalakshmi Iyadurai1
Prodigy 160 points
Part Number: AWR1843AOP
Other Parts Discussed in Thread: , AWR6843AOP, AWR6843

I have planned to use AWR1843AOP for a battery operated wearable device.

The device we are designing will be fixed on a spectacle or will be clipped on the shirt.

Recently i purchased AWR1843AOPEVM, The device is getting heated up.

Is it suitable for using in wearable device.

What are the options to reduce power consumption since we are planning for

battery operated device. Requesting your advice.

Thank you

  • 0
    TI__Guru 68160 points

    Hi,

    AWR1843AOP is not really meant for wearable but for automotive market.

    Power consumption (and heatup) is dependent on the usage and device configuration.

    Let me forward this thread to an expert for power saving options.

    Regards,

    Jitendra

  • 0 in reply to Jitendra Gupta
    TI__Guru*** 138349 points

    Hi,

    I recommend you take a look at the AWR6843AOP and the low power demo provided in the Industrial Toolbox on the TI Resource Explorer

    labs\out_of_box_demo\68xx_low_power_demo

    https://dev.ti.com/tirex/explore/node?node=AJoMGA2ID9pCPWEKPi16wg__VLyFKFf__LATEST

    Thank you

    Cesar

  • 0 in reply to Cesar
    Prodigy 160 points

    Thank you.

    1. It is mentioned in the web page  that the low power functions mentioned can be used with Some devices and those devices are listed, but it doesn’t have AWR1843AOP, is the low power functions mentioned are applicable for AWR1843AOP
    2. Where can i find how much power will be less for each of the low power options
    3. In page number 30 of AWR1843aop datasheet it is mentioned as 2.08 watt power for 50 % duty cycle, proportionately whether we can take the power for 5 % or 10 % duty cyle
    4. Based on the power consumption details given in page 30 of the data sheet, this device will not be suitable for battery powered device or still with effective utilization of power down options it can be considered for battery powered devices
    5. From mmwave point of view of 16 dbm TX power, whether this device can be considered for wearable device with proper packaging or this device should not be used in wearable device

    Please clarify.

    Thank you so much

  • +1 in reply to Mahalakshmi Iyadurai1
    TI__Guru*** 138349 points

    Hi,

    Answer 1

    As Jiten mentioned, the AWR1843AOP is not recommended for battery power applications. The low power functions mentioned on this page are not supported on AWR1843AOP.

    Answer 2

    Please start a new thread for this question with AWR6843 as Platform.

    Answer 3

    Hi, the power consumption is not proportional to the duty cycle. Even at 0% duty cycle, the power consumption is ~ 900mW

    Answer 4,5

    This device is not recommended for battery powered applications.

    Thank you

    Cesar