The invention relates to a micromechanical rotation acceleration sensor comprising a substrate element (1) on which a micromechanical sensor element (3) is provided in the form of two linear sensor structures (10,20) which are arranged at a defined distance from each other. The linear sensors (10,20) can rotate about a common axis (5). The inventive sensor also comprises an evaluating integrated circuit (100) which is integral with the substrate element (1) or an additional substrate. Said integrated circuit is connected to the linear sensor structures (10,20). The sensor signals can be evaluated in the evaluating integrated circuit in order to obtain a rotation acceleration signal (Υ). The linear sensors can be piezoelectric elements and are sensitive with respect to linear accelerations.