An Accurate Phase Shift Detector Using Bulk Voltage Boosting Technique for Sensing Applications

被引:0
|
作者
Tu, Yu-Ting [1 ]
Wang, Deng-Shian [1 ]
Wang, Chua-Chin [1 ]
机构
[1] Natl Sun Yat Sen Univ, Dept Elect Engn, Kaohsiung 80424, Taiwan
关键词
analog processing circuit; phase shift detector; offset calibration circuit; phase-shift readout circuit; high accuracy;
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 paper introduces a phase shift detector (PSD) with high accuracy for sensing applications. The proposed design comprises a Narrow bandpass filter, a Comparator, and an Offset calibration circuit. Narrow bandpass filter rejects all the signals except that generated from a Fixed-frequency Generator. To reduce the error caused by circuit noise and external interface, Offset calibration circuit (OCC) is utilized to calibrate the Comparator. The proposed phase shift detector circuit is realized on silicon using a 0.18 mu m CMOS technology. The post-layout simulation results show that the proposed design is able to detect the phase difference from -90 degrees to 90 degrees, where the maximum output error of the proposed PSD is 2.37%. Besides, the power consumption is 4.365 mW @ 10 MHz given a 0.9 V power supply voltage.
引用
收藏
页码:2110 / 2113
页数:4
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