MEMS Acceleromter

[lhagva99]

Hello,

I am looking for MEMS accelerometer for seismic application.

We need low noise, up to 100Hz bandwidth, full scale +-2g range.

I consider IIS3DHHC as a candidate, which has features as below:

• 3-axis, ±2.5 g full-scale
• Ultra-low noise performance: 45 µg/√Hz
• 16-bit data output

I would like to clarify what is the effective number of bits for 16bit output?

How does the Sensitivity 0.076mg/LSB relates to the noise performance?

Is there any other products with lower noise?

Best regards,

Lhagva

[Federica Bossi]

Hi @lhagva99 ,

The sensitivity of the IIS3DHHC accelerometer is 0.076 mg/LSB. This means that each least significant bit (LSB) of the digital output corresponds to a change of 0.076 mg in acceleration.

You could also look at LIS2DW12