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. 09, 2019
Filed:
Dec. 21, 2017
Cirrus Logic International Semiconductor Ltd., Edinburgh, GB;
David Paul Singleton, Edinburgh, GB;
Kapil Sharma, Edinburgh, GB;
Cirrus Logic, Inc., Austin, TX (US);
Abstract
This application relates to methods and apparatus for voltage regulation. Embodiments relate to signal processing circuit () having a first and second processing path with respective first and second inputs (INP and INN). The first and second processing paths have respective first and second virtual earth nodes (P andN) at the input to a differential integrator (). A differential feedback path is configured to apply a feedback signal to each of the first and second virtual earth nodes so as to minimize any voltage difference between them. A regulator () is operable to monitor a voltage at one of the virtual earth nodes (P) against a reference voltage (V) and to generate a regulation signal to maintain the voltage at said monitored one of the first and second virtual earth nodes to be equal to the reference voltage. The regulation signal is applied to both of the first and second virtual earth nodes.