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:
Oct. 07, 2014
Filed:
Oct. 07, 2013
Maxim Integrated Products, Inc., San Jose, CA (US);
Anand Chamakura, San Jose, CA (US);
Maxim Integrated Products, Inc., San Jose, CA (US);
Abstract
Techniques are described to mirror currents and subtract currents accurately. In an implementation, a circuit includes a first current source coupled to a first node to provide a current IPDand a current mirror coupled to the first node through a first switch Tto provide a current IREF. In a closed configuration, the current IREFflows from the current mirror into the first node. A sigma delta modulator controls the switch Tsuch that over a period of time an average current flowing from the current mirror into the first node is equal to the current IPDflowing out of the first node. The sigma delta modulator generates a digital output to control switch Tto allow a current IREFinto a second node, thus subtracting a portion of a current IPDat the second node over a period of time.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile