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. 31, 2018
Filed:
Oct. 25, 2017
Texas Instruments Incorporated, Dallas, TX (US);
Anand Jerry George, Calicut, IN;
Rishi Soundararajan, Bengaluru, IN;
Visvesvaraya Pentakota, Bengaluru, IN;
TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US);
Abstract
An analog-to-digital converter includes a comparator, a capacitive digital-to-analog converter (DAC), and calibration circuitry. The capacitive DAC is coupled to the comparator, and includes a plurality of capacitors. The calibration circuitry is configured to adjust a value of each of the capacitors, and includes binary search circuitry and error correction circuitry. The binary search circuitry applies a binary search over a first number of bits of a multi-bit adjustment value used to adjust the value of one of the capacitors, and averages a first number of comparator output samples to determine each of the first number of bits. The error correction circuitry applies an error correction to the multi-bit adjustment value generated by the binary search, and averages a second number of comparator output samples for the error correction. The second number of comparator output samples is greater than the first number of comparator output samples.