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:
Jul. 17, 2012
Filed:
Apr. 22, 2010
Applicant:
Michael D. Snedeker, Tucson, AZ (US);
Inventor:
Michael D. Snedeker, Tucson, AZ (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
INL error in a SAR ADC () is reduced by providing correction capacitors (B) each having a first terminal connected to a conductor () which is also connected to one terminal of the capacitors of a CDAC (A) and to an input of a comparator () of the SAR ADC. Stored INL error information (A) is utilized to control switches () coupled to second terminals of the correction capacitors to selectively couple them to either a ground voltage (GND) or a reference voltage (V) in response to the stored INL error information so as to reduce the INL errors.