The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 01, 2022
Filed:
Nov. 12, 2020
Knowles Electronics, Llc, Itasca, IL (US);
Mohammad Sadegh Mohammadi, Lyngby, DK;
Mohammad Shajaan, Copenhagen, DK;
Claus Erdmann Furst, Roskilde, DK;
Jens Tingleff, Copenhagen, DE;
Henrik Thomsen, Holte, DK;
Kristian Hansen, Copenhagen, DK;
KNOWLES ELECTRONICS, LLC, Itasca, IL (US);
Abstract
A sensor signal processing circuit including a delta-sigma analog-to-digital converter (ADC) and a control circuit is disclosed. The circuit is configured to adaptively activate one or more segments of current elements for sequential sampling periods based on a digital signal input to a DAC, wherein less than N current elements are allocated to each segment, each current element in an active segment is enabled and either contributes to a feedback signal of the DAC or does not contribute to the feedback signal, and current elements not in an active segment are disabled. The circuit can be integrated with an acoustic or other sensor as part of a sensor assembly.