A monolithic 3D fully-differential CMOS accelerometer

被引:0
|
作者
Tsai, Ming-Han [1 ]
Sun, Chih-Ming [1 ]
Wang, Chuanwei [2 ]
Lu, Jrhoung [3 ]
Fang, Weileun [1 ,2 ]
机构
[1] Natl Tsing Hua Univ, Nano Engn & Microsyst Inst, Hsinchu, Taiwan
[2] Natl Tsing Hua Univ, Dept Power Mech Engn, Hsinchu, Taiwan
[3] PixArt Imaging Inc, Hsinchu, Taiwan
关键词
accelerometer; fully-differential; 3D; CMOS;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This study presents a novel inertia sensor design to monolithic integrate x, y, and z-axis accelerometers on a single chip. The chip is implemented using the TSMC 0.35 mu m 2P4M CMOS process, and post metal wet-etching and dielectric dry-etching processes. Thus, the fully-differential capacitance sensing in-plane and out-plane CMOS accelerometers are realized. The measurement results demonstrate the sensitivities for in-plane and out-of-plane accelerometers are 3.9mV/G and 0.9mV/G respectively. The coupling ratios for in-plane and out-plane accelerometer are 3-5% and 15-30%, respectively.
引用
收藏
页码:1067 / +
页数:2
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