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电子学报  2014 

一种基于0.35μmCMOS工艺的单片集成微机械陀螺仪接口电路

DOI: 10.3969/j.issn.0372-2112.2014.09.032, PP. 1868-1872

Keywords: 接口电路,微机械陀螺仪,相关双采样

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Abstract:

本文介绍了一种用于读取角速度信号的单片集成微机械陀螺仪接口电路,该接口电路采用了相关双采样技术以抑制1/f噪声和运算跨导放大器的失调.为了方便系统仿真和测试,本文设计了一种微机械陀螺仪的等效电路.该接口电路采用0.35μmCMOS工艺设计并制造,芯片总面积为1.09mm×0.87mm.后仿真结果表明,该接口电路能达到0.58aF的电容分辨精度,动态范围达99.7dB.测试结果表明,接口电路系统增益为26.6mV/fF,在3.5V电源电压下系统总功耗为20.4mW.

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