Dear All,
We are using the IIS3DWB MEMS accelerometer in one of our products and have encountered an issue with a single unit that we would like your input on.
Issue description:
On this specific device, the X-axis always reports the maximum negative value (−32768 in 2’s complement), regardless of the selected full-scale range or output data rate. The Y and Z axes function correctly. The issue persists across power cycles and register resets and started after using it for 6-8 months.
We have verified the following:
• The offset registers are set to 0.
• No filters or self-test modes are enabled.
• The axis is properly enabled.
• The unit was removed from its casing to exclude mechanical stress.
• This appears to be a one-off issue; all other units from the same batch are functioning normally.
We would appreciate your insights on what might cause this axis-specific saturation behavior and whether there are diagnostic procedures or failure analysis options you recommend.
Kind regards,
