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author:

李凡阳 (李凡阳.) [1] (Scholars:李凡阳) | 洪思鑫 (洪思鑫.) [2]

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CQVIP PKU

Abstract:

采用0.18 μm CMOS工艺,设计了一种基于VCO量化的电容式MEMS加速度计接口电路.电路基于VCO实现量化,可直接输出数字信号,克服了传统模拟力反馈的非线性问题,且不需要ADC或额外的比较器电路,大大降低了电路的复杂性.仿真结果表明,该接口电路系统噪声基底为18 μg·Hz-1/2,最大非线性误差为0.57%,电路功耗为6.7 mW,输入带宽和检测范围分别为2.5 kHz和±1.0g.该接口电路达到较好的性能.

Keyword:

MEMS VCO 加速度计 接口电路

Community:

  • [ 1 ] [李凡阳]福州大学福建省集成电路设计中心,福州,350000
  • [ 2 ] [洪思鑫]福州大学福建省集成电路设计中心,福州,350000

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Source :

微电子学

ISSN: 1004-3365

CN: 50-1090/TN

Year: 2020

Issue: 3

Volume: 50

Page: 357-360

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count: -1

Chinese Cited Count:

30 Days PV: 0

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