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Need further clarification on the frequency response of the ADXL356.

Question asked by scotttennis on Aug 28, 2017
Latest reply on Aug 30, 2017 by scotttennis

The spec sheet for the ADXL356 says the internal filter has a 50% response at 1.5k Hz, but the plot shows a gain of .7 at 1.5k Hz. The structure should have a gain of about 1.1 at 1.5k Hz so the total gain should be about .55 at 1.5k Hz. What am I missing or is there an error? Also the internal filter is said to be a sinc3. I assume this means it of the form ((sin(const*freq))/(const*freq))^3. What is the value of the "const"?