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This paper presents a closed-loop switched-capacitor interface for high-quality bulk micro-mechanical accelerometer. Analogue force feedback is realized to establish an electro mechanical closed-loop so as to improve the dynamic range. The feedback accuracy is guaranteed by applying bottom-plate sampling structure in the feedback controller. A proportional derivative controller is introduced to compensate...
This paper presents a high precision integrated circuit for readout of a bulk micro-machined vibratory gyroscope. The fully differential circuit has adopted the chopper technique, combined with the differential-common duo-opamp structure, which has been proved excellent capability for low frequency noise cancellation. As the readout sensitivity is proportional with both the amplitude of the chopper...
This paper presents a large dynamic range, low noise integrated circuit for readout of a bulk micro-machined vibratory gyroscope. With the proposed sinusoidal chopper technique and the differential-common Duo-Opamp structure, three main objectives are achieved: the low frequency noise cancellation; the biasing of the high impedance nodes in a traditional fully-differential circuit; and the high linearity...
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