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:
Mar. 08, 2005
Filed:
Jun. 20, 2003
Applicant:
John M Fike, Austin, TX (US);
Inventor:
John M Fike, Austin, TX (US);
Assignee:
Qlogic Corporation, Aliso Viejo, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H03M001/10 ; G05F003/16 ; G05F003/02 ;
U.S. Cl.
CPC ...
Abstract
An analog to digital converter ('ADC') is provided that can be used in a system with an internal or external CPU or in an ASIC. The ADC includes a band gap reference (BGR) circuit whose output is internally coupled to an analog input of the ADC; and a positive analog supply voltage (AVDD) and a positive analog reference voltage (REFP) operationally coupled to a same voltage supply; wherein a BGR value is used by a CPU as a calibration constant for determining an AVDD value, a REFP value, and a Bit Weight value.