Sensors中的主题 Re: Accelerometer output data saturation

Accelerometer output data saturation

koichisakagami — Tue, 03 Feb 2026 21:22:04 GMT

Dear Sirs,
I have one question about MMA8652.

When the acceleration more than a setting range is added to an accelerometer,
how is the output data value ?
Off course, it is under the Absolute maximum ratings.

Is the value saturation (7FF or 800) ?
Or is the value unstable ?

For example.
When the full-scale is set to +- 2g ,
if the accelerometer will be accelerated to 3g,
how is the output data value ?

Best Regards,
Koichi Sakagami

Re: Accelerometer output data saturation

TomasVaverka — Wed, 05 Mar 2014 09:16:02 GMT

Dear Koichi-san,

When acceleration on any axis exceeds the accelerometer’s measurement range (±2g, ±4g or ±8g depending on FS[1:0] bits), the corresponding output is clipped at the full-scale value (0x7FF or 0x800). Considering your example, the 12-bit output value would be 0x7FF.

I hope it helps.

Regards,

Tomas

PS: If my answer helps to solve your question, please mark it as "Correct" or “Helpful”. Thank you.

Re: Accelerometer output data saturation

koichisakagami — Wed, 05 Mar 2014 09:35:08 GMT

Dear Tomas san,

Thank you for your answer.

I got it.

Best Regard,

Koichi Sakagami