Posted on June 24, 2013 at 18:40I have a design with the LSM303D e-Compass and 3D accelerometer. When we calibrate the accelerometer, we are frequently seeing zero-g level offset corrections greater than the +/-60 milli-g typical value specified in the datasheet.
Most assemblies that we calibrate are coming in around +/-60 milli-g in the X and Y directions, but we sometimes see numbers in excess of +/-120 milli-g in the Z direction. Is the +/-60 milli-g specification intended to be a +/-1-sigma range? +/-2-sigma? Some other range?
In the design, the part operates with a 3.0V supply. How might one expect the offset accuracy to change with a 20% change from the nominal supply voltage?
#lsm303d-accelerometer-offset
