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:
Aug. 30, 2016
Filed:
Apr. 10, 2015
Stmicroelectronics S.r.l., Agrate Brianza (MB), IT;
Mauro Giacomini, Bergamo, IT;
Carmelo Burgio, Bergamo, IT;
STMICROELECTRONICS S.R.L., Agrate Brianza (MB), IT;
Abstract
A method of calibrating a thermometer-code SAR-A/D converter is provided. The thermometer-code SAR-A/D converter includes an N-bit digital-to-analog converter (DAC) for outputting an N-bit output code. The DAC includes a first subconverter having a plurality of Nthermometer elements Tand a second subconverter having a plurality of Nbinary-weighted elements. The Noutput code is equal to the sum of Nand Nwhere N=2and Nis equal to N=N. The calibration method includes determining an Integral Non-Linearity error value (ε) of an Rthermometer-code level of the thermometer elements. The method further includes reducing the highest of the error value εto obtain a reduced error value, and generating the output code according to said reduced error.