US Patent Issued to CIRRUS LOGIC on Sept. 1 for "Charge injection-related and switching error-related offset reduction by local chopping of switched-capacitor circuits" (Texas Inventor)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,726,163, issued on Sept. 1, was assigned to CIRRUS LOGIC INC. (Austin, Texas).

"Charge injection-related and switching error-related offset reduction by local chopping of switched-capacitor circuits" was invented by Arashk Norouzpourshirazi (Austin, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "Switched-capacitor circuits having reduced charge injection offset are implemented by differentially interchanging pairs of charge transfer switches of the switched-capacitor circuit at a frequency other than the sampling frequency of the switched-capacitor circuit, thereby chopping the switch signal paths. The circuits include a pair of capacitors, a swit...