Analog device for a filtered time derivation of an incoming signal

摘要

The device has analog low-pass filters (F1-F3), and a signal time derivation module (DV) with a capacitor and a resistor. A selection module (SEL) selects one of the filters according to the amplitude of the oscillations of the noise component of an incident acceleration signal (Vin). The selection units include comparison units (COMP) for comparing the amplitude of the oscillations of the noise component of the signal with predetermined thresholds. An independent claim is also included for a method for filtered time derivation of an incident noise signal by analog filtering.