I'm working on the IIS2DH and I came to plot the system response at various frequencies depending on the high-pass settings (12, 50 or 100 Hz) with ODR = 5372 Hz, FS = +-4G, input signal 2.82g sin wave (2g RMS). Surprisingly it seems that in the passband not all filters have the expected 0 dB gain, the higher the cutoff frequency the lower the inband gain, as seen below:
Is something that is expected for this sensor + digital filtering? What type of digital filter is implemented? I found no traces on this in the datasheet.
All informations much appreciated.
Thanks in advance
