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Noise estimation at different data rates

Hi to all,

I was taking a look to ADXL355 datasheet: it's reported noise spectral density to be 20ug/Sqrt(Hz).
How can I estimate RMS noise at specific ODR?
I found formula

Noise = noise-density x sqrt(1.57 x ODR)

on a different discussion, which coefficient should I use for ADXL355?
Then, how can I compare ADXL355 noise to a different sensor where I have RMS noise value, but at different ODR than ADCL355?
Thanks.