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:
Mar. 02, 2021
Filed:
Dec. 09, 2019
Apple Inc., Cupertino, CA (US);
Mohammadhasan Fayazi, San Jose, CA (US);
Pablo Moreno Galbis, Burlingame, CA (US);
Stanley Bo-Ting Wang, Cupertino, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
A bias current circuit is disclosed. The bias current circuit includes a number of current sources that can selectively be coupled to a bias current node or an auxiliary node. The bias current may be provided through the bias current node. During a trimming operation, a control circuit may selectively couple particular ones of the current sources to the bias current node, in accordance with a desired bias current. Other ones of the current sources may be coupled to the auxiliary node, through which an auxiliary current is provided. Upon completing the trimming operation, the control circuit may cause the auxiliary current to be reduced to zero.