Patent ID: 8536764

Claim:
An arrangement of at least one piezoacoustic resonator on a substrate surface of a substrate, wherein the resonator has at least one piezoelectric layer, an electrode and at least one further electrode which are arranged in relation to one another in such a way that a specific electrical activation of the electrodes leads to a resonance oscillation of the resonator at a resonance frequency, the surface of the substrate is formed by an acoustic mirror integrated in the substrate for the purpose of acoustically insulating the substrate and the resonator from each other, at least one evaluation device is integrated in the substrate for determining the resonance frequency of the resonator, the evaluation device and at least one of the electrodes are connected to each other in an electrically conductive manner by way of an electric conductor track on the acoustic mirror, wherein the electric conductor track is routed through a mirror opening of the acoustic mirror; and wherein a lateral edge of the mirror opening of the acoustic mirror has an electrical opening insulation layer comprising opening insulation material on which the electric conductor track is applied.