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:
Apr. 16, 2024
Filed:
Jul. 05, 2022
Nxp Usa, Inc., Austin, TX (US);
NXP USA, Inc., Austin, TX (US);
Abstract
Analog-to-digital converters (ADCs) of an integrated circuit includes a first set of ADCs and second set of ADCs in which the ADCs of the first set are of a different type than the ADCs of the second set. On-chip testing of the ADCs includes calibrating an N-bit differential digital-to-analog converter (DAC) and storing a pair of calibration codes for each of 2possible DAC input codes for the DAC in an on-chip memory. The first set of ADCs is tested using the pairs of calibration codes stored in the on-chip memory and a full N-bit resolution of the DAC. Subsequently, the second set of ADCs is tested using pairs of calibration codes corresponding to a reduced M-bit resolution of the DAC, in which M is less than N. During the testing of the second set of ADCs, a portion of the calibration codes stored in the on-chip memory is overwritten.