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:
Jun. 07, 2016
Filed:
Sep. 16, 2014
Qualcomm Technologies International, Ltd., Cambridge, GB;
Hashem Zare-Hoseini, Cambridge, GB;
Dimitrios Mavridis, Cambridge, GB;
QUALCOMM Technologies International, Ltd., Cambridge, GB;
Abstract
Methods of measuring capacitance error in a successive approximation register (SAR) analog to digital converter (ADC) are described, including a method in which said ADC includes a register and a digital to analog converter (DAC), and the method comprises connecting a first capacitance associated with a first bit of the DAC between a first reference voltage and a second reference voltage, connecting a first set of one or more capacitances associated with one or more other bits of the DAC between the first reference voltage and a third reference voltage, connecting the first capacitance between a first node and the third reference voltage, connecting the first set of one or more capacitances between the first node and the second reference voltage, and measuring a voltage at the first node to determine a representation of a difference between the first capacitance and a total capacitance of the first set of one or more capacitances.