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:
Jul. 15, 2025
Filed:
Oct. 11, 2023
Cirrus Logic International Semiconductor Ltd., Edinburgh, GB;
Dipankar Nag, Newbury, GB;
Peter Hsu, Edinburgh, GB;
Kapil R. Sharma, Edinburgh, GB;
Gordon J. Bates, Edinburgh, GB;
Simon R. Foster, Reading, GB;
Mark J. McCloy-Stevens, Edinburgh, GB;
Cirrus Logic Inc., Austin, TX (US);
Abstract
The present application relates to current sensing circuitry () that comprises a differential amplifier () comprising first and second inputs configured to sense a current across a sense resistance, and an output configured to output a current sense signal. The circuitry () further comprises a first current source, a second current source and a switch network operable in: a first phase in which the first current source is connected to the first input and disconnected from the output, and the second current source is connected to the output and disconnected from the first input; and a second phase in which the first current source is connected to the output and disconnected from the first input, and the second current source is connected to the first input and disconnected from the output.