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:
Mar. 28, 2017
Filed:
Jan. 25, 2016
Pixart Imaging (Penang) Sdn. Bhd., Penang, MY;
Kei Tee Tiew, Penang, MY;
PIXART IMAGING (PENANG) SDN. BHD., Penang, MY;
Abstract
A pipelined ADC incorporating variable input gain has a novel first stage generating a first digital output and a residue according to an analog input. The first stage comprises a novel MDAC. The MDAC comprises an operational amplifier, a feedback capacitor, a first sampling capacitor and a second sampling capacitor. First terminals of the feedback capacitor, the first sampling capacitor and the second sampling capacitor are connected to an inverted input terminal of the operational amplifier. A non-inverted input terminal of the operational amplifier is connected to a ground. In a sampling phase, second terminals of the feedback capacitor, the first sampling capacitor and the second sampling capacitor are connected to the analog input. In a charge transferring phase, second terminals of the feedback capacitor, the first sampling capacitor and the second sampling capacitor are respectively connected to the output terminal, a flash ADC output and the ground.