ICM42688-P Bias Instability and Bias Repeatability

By adamegbert , 13 March 2023

I am working with an ICM 42688-P and I see a fair amount of fluctuation in the gyroscope biases between power cycles within my device. I have a couple of questions about this.

1. Does anyone know if TDK has any listed, or calculated themselves, parameters for bias instability (in-run bias stability), or bias repeatability (turn-on bias stability)? I do not see these values within the datasheet.
2. Are there any known methods for how to minimize these effects for this particular sensor, either by estimating, removing, or calibrating?

Thank you,
Adam

jayminshah1tdkcom

2 years 10 months ago

hi
please follow AN-000393 – IMU PCB Design and MEMS Assembly Guidelines.
If assembly is not done right, then there could be lot of bias variability.
Thank You

phpbb Post ID
44952
phpbb Topic ID
39744