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:
Jan. 15, 1991
Filed:
Apr. 02, 1990
Applicant:
Inventor:
Bruce J Penney, Portland, OR (US);
Assignee:
Triquint Semiconductor, Inc., Beaverton, OR (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
341118 ; 341155 ;
Abstract
An analog to digital converter with second order error correction provides a more accurate digital output code for a high frequency input analog signal. A slope of the input signal is determined from the digital output code of a quantizer, and the slope is used to provide a correction value that is a function of the slope. The correction value may also be a function of a level range of the quantizer. The correction value is added to the digital output code to produce a corrected digital output code.