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EnglishThis work moves toward the state-of-the-art for the interfaces usually employed for three-axes micromachined gyroscopes. Several architectures based on multiplexing schemes in order to extremely simplify the analog front-end which can be based on a single charge amplifier are analyzed and compared. This paper presents a novel solution that experiments an innovative readout technique based on a special analog-CDMA (Code Division Multiplexing Access); this architecture can reach a considerable reduction of the analog front-end with reference to other multiplexing schemes. Many family codes have been considered in order to find the best trade-off between performance and complexity. System-level simulations prove the effectiveness of this technique in processing all the required signals. Finally, a case study is analyzed: a comparison with the SD740 micro-machined integrated inertial module with a tri-axial gyroscope by SensorDynamics AG is provided.
| Autori interni: | |
| Autori: | Giomi, E; Fanucci, L.; Rocchi, A. |
| Titolo: | Analog-CMDA based interfaces for MEMS gyroscopes |
| Anno del prodotto: | 2014 |
| Digital Object Identifier (DOI): | 10.1016/j.mejo.2013.10.003 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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