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:
Nov. 02, 2010
Filed:
Mar. 06, 2009
Priyanka Khasnis, Bangalore, IN;
Dvj Ravi Kumar, Bangalore, IN;
Theertham Srinivas, Bangalore, IN;
Vallamkonda Madhuri, Bangalore, IN;
Gururaj Ghorpade, Bangalore, IN;
Mehmet Aslan, Sunnyvale, CA (US);
Richard Dean Henderson, San Jose, CA (US);
Priyanka Khasnis, Bangalore, IN;
DVJ Ravi Kumar, Bangalore, IN;
Theertham Srinivas, Bangalore, IN;
Vallamkonda Madhuri, Bangalore, IN;
Gururaj Ghorpade, Bangalore, IN;
Mehmet Aslan, Sunnyvale, CA (US);
Richard Dean Henderson, San Jose, CA (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
A method for calibrating an analog-to-digital converter includes sampling an analog input signal and generating input samples, reversing the polarity of at least one input sample, averaging the digital output codes associated with a first pair of input samples where the first pair of input samples has opposite polarities, and generating an offset correction value being the average of the digital output codes associated with the first pair of input samples. In another embodiment, a method for calibrating an ADC includes sampling the analog input signal and generating input samples, introducing an incremental value to modify the magnitude of at least one input sample, computing an actual gain value using the digital output codes associated with a first input sample and a second input sample having the modified magnitude, and generating a gain correction value being the ratio of an ideal gain of the ADC to the actual gain.