Hello peterl,
Current consumption depends on power mode, ODR, bandwidth, filter mode, noise mode.
For 1mA current consumption, which side you tested, MCU side or BMI270 side?
... View more
Hello rezza,
Which HW board you used? If you used BNO055 USB Stlck, there was application note for your reference.
https://www.bosch-sensortec.com/media/boschsensortec/downloads/application_notes_1/bst-bno055-an009.pdf
... View more