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This work reports on the possibility to use gyroscopes based on piezoresistive NEMS gauges in vestibular implants. The specifications for this application are critically discussed, and used to derive parameters required at the sensor level and integrated circuit level. An algorithm to transform the acquired signals from the gyroscope reference system into the firing rate of vestibular nerves is also...
We report a 3-channel ASIC for M&NEMS coriolis vibratory gyroscopes. Key element of each analog frontend (AFE) channel is a closed-loop interface amplifier with current reuse for the biasing of the piezoresistive nanogauge sensor detection. The outputs of the 3-channels are multiplexed to a single band-pass sigma delta modulator for on-chip analog to digital conversion. The fabricated ASIC achieves...
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