Why does the MC33974 have an unfiltered signal and level output?
The parts raw signal output is provided for users who may have an MCU/DSP signal-processing algorithm in mind and dont want to use on-chip filtering hardware or signal preprocessing. The level signal is passed through an on-chip low-pass RC filter. The C value is selected by adding a capacitor to the LP CAP pin. The nominal R value is set at 50 kW for roll-off and response-time calculations.
