A Wireless Artificial Mechanoreceptor in 180-nm CMOS
In: IEEE Transactions on Microwave Theory and Techniques, Jg. 69 (2021-06-01), S. 2907-2920
Online
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Zugriff:
This article presents an implantable low-power wireless integrated system for tactile sensing applications. The reported application-specified integrated circuit (ASIC) uses a low-loss magnetic human body communication channel for both wireless power and data transfer. The chip is hybrid-integrated with an in-house fabricated MEMS capacitive force sensor to form an implantable artificial mechanoreceptor. An on-chip correlated double sampling capacitance to time converter (CTC) consumes 750 nW from a 1.2-V on-chip regulated supply, achieving a 2.0-fF resolution for an input capacitance of 14 pF and a FoM of 49 fJ/c-s while occupying an area of only 0.04 mm2. The CTC has a time-multiplexed mode to interface with four input capacitors. Wireless power management feedback is used to ensure robust operation in the presence of hand gesture changes and process–voltage–temperature variations. The on-chip data transmitter can operate in ON–OFF keying (OOK) or frequency-shift keying modulation formats, where it consumes only $7.8~\mu \text{W}$ in the OOK mode. The 1.62-mm2 chip is fabricated in a standard 180-nm CMOS process and consumes $110.3~\mu \text{W}$ .
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A Wireless Artificial Mechanoreceptor in 180-nm CMOS
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Autor/in / Beteiligte Person: | Aflatouni, Firooz ; Jan Van der Spiegel ; Allen, Mark G. ; Hao, Han ; Lucas, Timothy H. ; Richardson, Andrew G. ; Du, Lin |
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Zeitschrift: | IEEE Transactions on Microwave Theory and Techniques, Jg. 69 (2021-06-01), S. 2907-2920 |
Veröffentlichung: | Institute of Electrical and Electronics Engineers (IEEE), 2021 |
Medientyp: | unknown |
ISSN: | 1557-9670 (print) ; 0018-9480 (print) |
DOI: | 10.1109/tmtt.2021.3072398 |
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