I'm using the ADXL362 in a power-sensitive system (wildlife transmitters, see holohil.com for the product line), and I have an un-accounted power draw about 200ms after reading the interrupt status; the power draw is not present if I remove the 362 from the system.
This draw is happening after the the system's microcontroller has been placed in the power-down sleep mode, waiting to be awaked by an attached RTC interrupt or ADXL362 activity/inactivity interrupt.
Is there an explanation for this draw?
The attached trace clearly shows the draw. In the LED case the first square step is the microcontroller wakeup, a sleep again, then a wakeup from either an RTC interrupt or from the ADXL interrupt, then dropping the microcontroller back power-down sleep. 200mSec later there a ramping draw peaks and falls off. The same draw is visible in every system interaction that polls the 362 to check the interrupt status. I have the 362 in its lower power mode, at lowest sampling frequency, in measurement mode.