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Current consumption difference nRF51422 and nRF51822

Bart de Kramer

I'm had develloped some software and tested it on the nRF51-DK. After that I made my own PCB design where only the nRF51422 is replaced by a nRF51822. When I flash both with exactly the same software, the nRF51-DK consumes about 5.6uA and my own PCB about 2350uA. Is there a difference between the nRF51422 and nRF51822 which can cause this big difference?

I'm using softdevice s110_nrf51_8.0.0.

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    Yes, but we need to know why on our board it doesn't draw more current but on yours it does.

    I suspecting the RF part causing the issue. You can try to test with an example that advertise something. Also you can try to test with the radio_test example (the simple one, not with softdevice). You can open a case on our Support Portal (My Page) and send your schematic and layout there, then we can do better investigation.

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  • 0

    Yes, but we need to know why on our board it doesn't draw more current but on yours it does.

    I suspecting the RF part causing the issue. You can try to test with an example that advertise something. Also you can try to test with the radio_test example (the simple one, not with softdevice). You can open a case on our Support Portal (My Page) and send your schematic and layout there, then we can do better investigation.

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