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:
Dec. 17, 2002
Filed:
Mar. 14, 2001
Applicant:
Inventors:
Bengt Erik Jonsson, Spånga, SE;
Richard Hellberg, Huddinge, SE;
Assignee:
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/06 ;
U.S. Cl.
CPC ...
H03M 1/06 ;
Abstract
An A/D converter system includes a first A/D converter with calibration circuitry. Also included in the system is an auxiliary A/D converter having a lower performance level than the first A/D converter. Circuitry is provided for temporarily switching an A/D conversion from the first A/D converter to the auxiliary A/D converter during short time intervals used for calibration of the first A/D converter. The rate at which the A/D conversion is switched is lower than the sampling rate of the first A/D converter.