How to calculate the measurement accuracy of ADXRS290 and ADXRS450?

Hi, 

The datasheet also specifies the offset error, sensitivity tolerance and change with temperature, noise, non-linearity and cross axis sensitivity as sources of error. 

All these parameters add to the angle rate estimation error: 

Non-linearity and cross axis sensitivity in most applications can be ignored because their contribution to error are small. In this case: 

angle rate = sensor output[LSB]/(sensitivity[LSB/deg/s]+/- sensitivity tolerance) + offset[deg/s] * integration time[s] + noise

sensitivity offset, cross axis sensitivity and sensitivity temperature dependency can be compensated by calibration.

noise and nonlinearity cannot be compensated. 

I hope this helps, 

Pablo. 

Hi, 

The datasheet also specifies the offset error, sensitivity tolerance and change with temperature, noise, non-linearity and cross axis sensitivity as sources of error. 

All these parameters add to the angle rate estimation error: 

Non-linearity and cross axis sensitivity in most applications can be ignored because their contribution to error are small. In this case: 

angle rate = sensor output[LSB]/(sensitivity[LSB/deg/s]+/- sensitivity tolerance) + offset[deg/s] * integration time[s] + noise

sensitivity offset, cross axis sensitivity and sensitivity temperature dependency can be compensated by calibration.

noise and nonlinearity cannot be compensated. 

I hope this helps, 

Pablo.