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:
Feb. 04, 2003
Filed:
Nov. 06, 2001
H. Scott Fetterman, New Tripoli, PA (US);
Yalin Ren, Allentown, PA (US);
Agere Systems Inc., Allentown, PA (US);
Abstract
A multistage analog-to-digital converter (ADC) having improved linearity is disclosed. The ADC in an illustrative embodiment includes a sampling circuit and a plurality of stages. A first one of the stages receives a sampled analog input signal from the sampling circuit, and each of the stages operates to generate an output corresponding to one or more bits of a digital output signal representative of the analog input signal. Each of at least a subset of the stages has associated therewith at least one amplifier circuit, e.g., an output analog residue amplifier, having at least one sampling component and at least one feedback component. The sampling component and the feedback component are periodically swapped to reduce gain error between one or more of the stages so as to provide improved linearity for the ADC.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile