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. 12, 2011
Filed:
Dec. 08, 2008
Domenic F. Terranova, North Andover, MA (US);
Domenic F. Terranova, North Andover, MA (US);
Kenet, Inc., Woburn, MA (US);
Abstract
An adjustment circuit for use with a resistive reference ladder that establishes nominal reference steps and a common mode voltage for a plurality of comparators, such as used in a flash converter. An 'H' arrangement of current sources injects current at a first node, V, and sinks at a second node, V. with V, and V. being coupled to ends of the ladder. The voltage difference between these two nodes thus controls the scale applied to the reference ladder, without affecting a common mode voltage reference Vcm. Alternatively, the current source may inject current at Vand sink current at Vto decrease the reference for each comparator.