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:
Apr. 14, 2026
Filed:
Jun. 08, 2023
Applicant:
Invensense, Inc., San Jose, CA (US);
Inventors:
Stefano Valle, Milan, IT;
Tomasz E. Hanzlik, Szczecin, PL;
Assignee:
INVENSENSE, INC., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 27/26 (2006.01); H04R 3/00 (2006.01); H04R 19/04 (2006.01);
U.S. Cl.
CPC ...
G01R 27/2605 (2013.01); H04R 3/00 (2013.01); H04R 19/04 (2013.01); H04R 2201/003 (2013.01); H04R 2410/03 (2013.01);
Abstract
Disclosed embodiments provide a self-contained topology that enables a significant noise reduction of capacitive sensor readout interfaces. For example, various embodiments can provide low noise capacitive sensor readout interfaces or analog front ends having a main buffer amplifier in a bootstrap configuration, wherein a bootstrap loop configuration comprises a negative capacitance coupled to an input of the main buffer amplifier with a negative impedance converter.