This anomaly applies to IC Rev. Revision 2, build codes QDAA-G00.
Symptoms
Supply current is increased in Power-down state.
Conditions
Device is in Power-down state.
Consequences
- For trace codes earlier than 2223xx (year 22, week 23), the supply current may be up to several hundred µA in typical conditions. The mean value is expected to be less than 1 µA.
- For trace codes earlier than 2223xx (year 22, week 23) with a green sticker on the reel, vacuum bag, and inner box label, the supply current may be up to 1µA in typical conditions. The mean value is expected to be less than 100 nA.
- For trace codes later than 2223xx (year 22, week 23), the supply current may be up to 1µA in typical conditions. The mean value is expected to be less than 100 nA.
Figure 1. Trace code and green sticker on nRF21540 label
Workaround
Use samples with trace code 2223xx (year 22, week 23) or later or retested samples marked with a green round sticker on the reel, vacuum bag, and inner box label to keep maximum supply current at less than 1 µA in typical conditions.