Abstract:
The angular speed sensor comprises a pair of mobile masses (2a, 2b) which are formed in the epitaxial layer (37) and are anchored to one another and to the remainder of the device by anchorage elements; the mobile masses are symmetrical with one another, and have mobile excitation electrodes (6a) which are intercalated with respective fixed excitation electrodes (7a 1 , 7a 2 ) and mobile detection electrodes (6b) which are intercalated with fixed detection electrodes (7b 1 , 7b 2 ). The mobile and fixed excitation electrodes extend in a first direction and the mobile and fixed detection electrodes extend in a second direction which is perpendicular to the first direction and is disposed on a single plane parallel to the surface of the device.