Title :
A CMOS rotary encoder system based on magnetic pattern analysis with a resolution of 10b per rotation
Author :
Kawahito, Shoji ; Takahashi, Toru ; Nagano, Yoshitaka ; Nakano, Kazuhiro
Author_Institution :
Shizuoka Univ., Hamamatsu, Japan
Abstract :
A single-chip CMOS magnetic rotary encoder system based on magnetic pattern analysis is presented. Magnetic sensor arrays are integrated with ADCs and DSP circuits and fabricated in a standard 0.25 μm CMOS technology. The chip detects the rotation angle within an error of ±0.36 degrees (10b per rotation).
Keywords :
CMOS integrated circuits; analogue-digital conversion; angular measurement; digital signal processing chips; electric sensing devices; magnetic sensors; measurement errors; signal resolution; 0.25 micron; CMOS rotary encoder system; CMOS technology; DSP circuits; integrated ADC; magnetic pattern analysis; magnetic sensor arrays; rotation angle detection error; single-chip CMOS magnetic rotary encoder system; system resolution; Automotive engineering; Circuits; Impurities; Magnetic devices; Magnetic sensors; Magnetic separation; Pattern analysis; Sensor arrays; Sensor systems; Switches;
Conference_Titel :
Solid-State Circuits Conference, 2005. Digest of Technical Papers. ISSCC. 2005 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-8904-2
DOI :
10.1109/ISSCC.2005.1493958
