I am designing a sensor to measure vibration from industrial equipment. The main required characteristics of the accelerometer are listed below: - Acceleration Range - up to 8g - Type - Digital - Output Type - I²C, SPI - Axis - X / Y / Z - Bandwidth - minimum of 1.6KHz (as higher the better) - Resolution - 16 bits I found a lot of accelerometer that meet the specifications above, although I am not being able to understand how can I guarantee a good resolution in high frequencies of the accelerometer. I already tested the MPU9250 in a shaker and the results in low frequency (until 150Hz) is reasonable, although in high frequencies (from 150Hz until 1kHz) it is horrible as shown below: ps- the blue dots are the reference accelerometer (piezoeletric) and the orange dot is the MPU9250. My question is: How can I understand from the datasheet that the resolution in high frequency will be ok?
... View more