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. 22, 2014
Filed:
Mar. 14, 2013
Frederick Carnegie Thompson, Foynes, IE;
Barry Stakely, Snow Camp, NC (US);
Frederick Carnegie Thompson, Foynes, IE;
Barry Stakely, Snow Camp, NC (US);
Analog Devices Technology, Hamilton, BM;
Abstract
Embodiments of the present invention may provide an improved apparatus and method for correcting timing errors associated with process, voltage, and temperature effects in asynchronous successive approximation register (SAR) analog-to-digital converters (ADC). A SAR ADC may include a timer comprising programmable timing circuits that may ensure that the different components of the SAR ADC are operating according to a timing scheme. Operation of the timing circuits may vary with process, voltage, and temperature, which may adversely affect the timing/accuracy of the SAR ADC. The ADC may include a reference circuit provided on the same integrated circuit as the SAR ADC that may provide a timing reference for the timing circuits. If the reference circuit indicates that the timing circuits are operating faster or slower than ideal, timing values within the timing circuits may be revised to compensate for such variations.