NFC system off current

I am currently working on a project using the nRF52840-DK and the Power Profiler Kit II. I have created an application based on the "NFC System Off" sample. However, I am experiencing an issue with the current consumption.

The minimum current I can achieve is around 200 µA, which is significantly higher than expected for the system off mode. According to the nRF52840 specifications, the current consumption in the system off mode with RAM retention should be in the range of a few microamperes (typically around 0.4 µA).

Could you please provide guidance on how to reduce the current consumption to the expected levels? Any advice or troubleshooting steps would be greatly appreciated.

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