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69‐4: Invited Paper: A Programmable Capacitive Imaging Technique Using Multiple Sigma‐Delta Modulators for High SNR Touch Sensor and Pen
Author(s) -
Morrison Gerald D.,
Gray Patrick Troy,
Seger Rick
Publication year - 2018
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.12204
Subject(s) - capacitive sensing , delta sigma modulation , modulation (music) , sense (electronics) , computer science , electronic engineering , engineering , electrical engineering , physics , acoustics , cmos
A capacitive sensing technique based on sigma‐delta modulation is presented. This architecture creates multi‐frequency drive and sense signals with high SNR. It enables concurrent and simultaneous self‐capacitive touch, mutual‐capacitive touch and capacitive pen.