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2019 | OriginalPaper | Buchkapitel

Design of High Precision Band-Pass Sigma-Delta ADC in MEMS Gyroscope

verfasst von : Lin Xiao, Jinhui Tan, Shaoqing Li, Jihua Chen

Erschienen in: Computer Engineering and Technology

Verlag: Springer Singapore

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Abstract

In order to meet the demands of MEMS gyroscope for high precision and narrow bandwidth of ADC, a band-pass Sigma-Delta ADC with high precision is designed and verified by simulation. The oversampling rate (OSR) and center frequency are obtained through detecting and calculating the data of the gyroscope meter. As a result, The ADC structure of single-loop, six-order, and one-bit quantization is determined, and a suitable resonator is selected. The simulation results of the Simulink model of the ADC circuit show that the signal-to-noise ratio of the ADC can reach 132.2 dB and the effective number of bits can reach 21.70 bits, which satisfies the requirements of high precision and narrow bandwidth of the MEMS gyroscope. Thus, my design can help guide the design of transistor-level circuit for the band-pass Sigma-Delta ADC.

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Metadaten
Titel
Design of High Precision Band-Pass Sigma-Delta ADC in MEMS Gyroscope
verfasst von
Lin Xiao
Jinhui Tan
Shaoqing Li
Jihua Chen
Copyright-Jahr
2019
Verlag
Springer Singapore
DOI
https://doi.org/10.1007/978-981-15-1850-8_2

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