標題: A CMOS Phase to Digital Converter for Optical Encoders
作者: Chiang, Cheng-Ta
Hsieh, Kaun-Chun
Huang, Yu-Chung
電機學院
College of Electrical and Computer Engineering
關鍵字: Optical encoders;interpolation circuits;PLL
公開日期: 1-一月-2011
摘要: In this paper, a CMOS phase to digital converter for optical encoders is newly proposed. This chip adopts a proposed phase-shift method to easily generate phase shifts of signals by using a resistor chain. Different to PLL-based and ADC-based interpolation, the complexity and hardware cost can be relaxed in this proposed chip. Based upon the device parameters of 0.5 mu m 2P2M CMOS technology with 5 V power supply, all the functions and performance of the proposed CMOS phase to digital converter for optical encoders are successfully tested and proven through SPICE simulations. The physical layout of interpolation circuits and current to voltage converter are 1000 x 600 mu m(2) and 850 x 760 mu m(2), respectively. The proposed chip is suitable for optical encoders.
URI: http://hdl.handle.net/11536/150542
ISSN: 1091-5281
期刊: 2011 IEEE INTERNATIONAL INSTRUMENTATION AND MEASUREMENT TECHNOLOGY CONFERENCE (I2MTC)
起始頁: 1368
結束頁: 1371
顯示於類別:會議論文