High performance inductive sensing all digital phase locked loop

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United States of America Patent

PATENT NO 11973498
APP PUB NO 20230188135A1
SERIAL NO

18086193

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Abstract

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Front-end circuits that combine inductive and capacitive sensing are described. In one embodiment, an apparatus includes a plurality of inductive elements, an inductive measurement circuit, and a frequency divider circuit. The inductive measurement circuit is to output a first signal with a first frequency. The first signal is associated with an inductance change of one of the inductive elements. A feedback circuit can maintain the sinusoidal operation of the first signal. The frequency divider circuit can generate a second signal with a second frequency that is lower than the first frequency.

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Patent Owner(s)

Patent OwnerAddress
CYPRESS SEMICONDUCTOR CORPORATION198 CHAMPION COURT SAN JOSE CA 95134

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gürleyük, Ça{hacek over (g)}ri Delfgauw, NL 2 2
Macsweeney, Dermot Cork, IE 6 35
Makinwa, Kofi San Jose, US 11 44
O'Keeffe, Daniel Whitechurch, IE 50 1162
Pimenta, Matheus Brasília, BR 3 30
Seguine, Dennis Kalispell, US 19 257
Walsh, Paul M Cork, IE 12 96

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