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Title: Design of high-SNR CMOS interface circuit for micro-machined gyroscope
Authors: Lu, H.
Xu, Y. 
Wang, S.
Keywords: Front-end
Sigma-Delta Modulator
Issue Date: 2011
Citation: Lu, H., Xu, Y., Wang, S. (2011). Design of high-SNR CMOS interface circuit for micro-machined gyroscope. Key Engineering Materials 483 : 508-512. ScholarBank@NUS Repository.
Abstract: A CMOS integrated interface circuit for micro-machined gyroscope containing a novel front-end and 6th-order Sigma-delta modulator is presented in this paper. To reduce the noise coming from the sensor and circuit, the front-end is accomplished by a switched-capacitor architecture, which constructed by a high-gain fully-differential amplifier and improved by chopper-stabilization technique, and work under a designed charging and sampling logic scheme. A cascade 6th-order Sigma-Delta modulator is designed to get high resolution, reduce quantized error and suppress the instability brought by high-order modulator. With the cascade structure and 16-bit resolution 32 OSR, the modulator outputs 3-bits digital stream. The whole circuit is designed with AMS technique and 3.3V power consumption. The simulation result presents that the interface circuit performs a appointed under a low-noise design specification in signal band, and the SNR of the circuit achieves remarkable value of 106dB. © (2011) Trans Tech Publications.
Source Title: Key Engineering Materials
ISBN: 9783037851753
ISSN: 10139826
DOI: 10.4028/
Appears in Collections:Staff Publications

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