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:
Jun. 21, 2022
Filed:
Sep. 22, 2020
Cirrus Logic International Semiconductor Ltd., Edinburgh, GB;
Sameer Baveja, Edinburgh, GB;
Hamed Sadati, Edinburgh, GB;
Cirrus Logic, Inc., Austin, TX (US);
Abstract
This application relates to circuitry for monitoring for instability of an amplifier. The amplifier () has a first signal path between an amplifier input (IN) and an amplifier output (V) and a feedback path from the output to form a feedback loop with at least part of the first signal path. A comparator () has a first input configured to receive a first signal (IN) derived from a first amplifier node which is part of said feedback loop and a second input configured to receive a second signal (IN) derived from a second amplifier node which varies with the signal at the amplifier input but does not form part of said feedback loop. The comparator is configured to compare the first signal to the second signal and generate a comparison signal (COMP), wherein in the event of amplifier instability the comparison signal comprises a characteristic indicative of amplifier instability.