Hi, I would like to know how select correct ADC to use with MEMS acceleration sensor.
I could have several combinations, for example (values are random):
- 2g fullscale sensor with 30 ug/sqrt(Hz) noise density
- 1g fullscale sensor with 80 ug/sqrt(Hz) noise density
Now, first sensor gives me less sensitivity, but has got less noise.
So should I use first or second sensor?
Then, how could I calculate the resolution of ADC?
I could use a 24-bit ADC, but due to the noise (in the given bandwidth) I could reach same results using a cheapest 8-bit ADC.
Is there available a datasheet or application note, or similar?