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. 30, 2019
Filed:
Jul. 26, 2018
Qualcomm Incorporated, San Diego, CA (US);
Ankit Srivastava, San Diego, CA (US);
Sameer Wadhwa, San Diego, CA (US);
Shunxi Wang, Palo Alto, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Certain aspects of the present disclosure provide a successive approximation register (SAR) analog-to-digital converter (ADC) implemented with a passive gain scaling architecture. Certain aspects provide a circuit for analog-to-digital conversion. The circuit generally includes a plurality of capacitive elements, a plurality of switches coupled to the plurality of capacitive elements, and SAR logic having an output coupled to control inputs of the plurality of switches. The circuit also includes a comparator having an output coupled to an input of the SAR logic, a sampling circuit coupled to an input node of the circuit, and a first capacitive element coupled in series between the sampling circuit and the plurality of capacitive elements.