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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.
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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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