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. 08, 1991
Filed:
Feb. 19, 1991
Mathew A Rybicki, Austin, TX (US);
Roger A Whatley, Georgetown, TX (US);
Katsufumi Nakamura, Pittsburgh, PA (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
An analog-to-digital converter utilizes both a successive approximation register and a current steering circuit within a digital-to-analog converter to achieve an improved conversion speed, and improved resolution for a predetermined amount of power. The current steering circuit, which is controlled by the successive approximation register, connects constant current sources to current source loads to produce a differential signal output. By steering current from the differential current source loads to the constant current sources, a signal difference resolves at the output of the digital-to-analog converter faster and with greater resolution.