US 12,442,683 B2
Single-capacitor inductive sense systems
Jason L. Wardlaw, Austin, TX (US); Michael A. Kost, Cedar Park, TX (US); Anthony S. Doy, Los Gatos, CA (US); Tejasvi Das, Austin, TX (US); Siddharth Maru, Austin, TX (US); Xin Zhao, Austin, TX (US); Matthew Beardsworth, Austin, TX (US); and Bruce E. Duewer, Round Rock, TX (US)
Assigned to Cirrus Logic Inc., Austin, TX (US)
Filed by Cirrus Logic International Semiconductor Ltd., Edinburgh (GB)
Filed on Nov. 3, 2022, as Appl. No. 17/980,429.
Application 17/980,429 is a continuation of application No. 16/517,046, filed on Jul. 19, 2019, granted, now 11,536,758.
Claims priority of provisional application 62/810,614, filed on Feb. 26, 2019.
Prior Publication US 2023/0082721 A1, Mar. 16, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G01H 13/00 (2006.01); G01L 9/00 (2006.01); G01R 27/02 (2006.01); G01R 27/26 (2006.01); G01R 27/28 (2006.01); G06F 3/01 (2006.01)
CPC G01H 13/00 (2013.01) [G01L 9/007 (2013.01); G01L 9/0072 (2013.01); G01R 27/02 (2013.01); G01R 27/26 (2013.01); G01R 27/2605 (2013.01); G01R 27/2611 (2013.01); G01R 27/28 (2013.01); G06F 3/016 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A system comprising:
an array of sensor elements;
a driver configured to drive the array of sensor elements;
a switch network comprising a plurality of switches coupled between the array of sensor elements and the driver; and
control circuitry configured to:
control the switch network to selectively enable and disable multiple switch configurations for driving by the driver; and
control the array of sensor elements, such that when one of the array of sensor elements is enabled, the one of the array of sensor elements is in parallel with a series combination of the others of the array of sensor elements.