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:
Sep. 12, 2023
Filed:
Jan. 12, 2022
Nxp Usa, Inc., Austin, TX (US);
Ronak Prakashchandra Trivedi, Cupertino, CA (US);
Hanqing Xing, Cupertino, CA (US);
See-Hoi Wong, Fremont, CA (US);
Jean CauXuan Le, Santa Clara, CA (US);
Ranga Seshu Paladugu, Milpitas, CA (US);
NXP USA, Inc., Austin, TX (US);
Abstract
A method for self-calibration of reference voltage drop in a Digital to Analog Converter (DAC) includes measuring each one of a plurality of thermometric weightages associated with a respective one of a plurality of thermometric bits, wherein the DAC includes a plurality of sub-binary bits and the plurality of thermometric bits. For each sequentially increasing combination of thermometric bit settings including at least two thermometric bits coupled to a high reference voltage and each sub-binary bit coupled to a low reference voltage, performing the steps of: determining a respective combined weightage correction; adding the combined weightage correction to the highest order bit of the combination of thermometric bit settings; and incrementing a number of bits of the combination of thermometric bit settings in response to the number of bits of the sequential combination being less than a total number of the plurality of thermometric bits.