I have a custom board using a nRF52840.
A part of the configuration is a Analog Devices MAX98357AEWL+T Class D amplifier which is driven by i2s0.
When the board is idle (just advertising) current consumption per my power profiler is 68 micro-amps - a higher value than I expected.
If I remove i2s0 from the configuration by:
1. taking it out of app_overlay and
2. modifying the firmware where appropriate
Idle current consumption drops to 38 micro-amps - a value closer to my expectations.
It appears that Power Management is not imppplememted on i2s.
Is there any way I can get the lower consumption with i2s enabled.