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:
Oct. 02, 2012
Filed:
Oct. 05, 2010
Fang-shi Jordan Lai, Chia Yi, TW;
Hsu-feng Hsueh, Tainan, TW;
Cheng Yen Weng, Hsinchu, TW;
Yung-fu Lin, Hsinchu, TW;
Manoj M. Mhala, Hsinchu, TW;
Tao Wen Chung, Zhubei, TW;
Chin-hao Chang, Hsinchu, TW;
Fang-Shi Jordan Lai, Chia Yi, TW;
Hsu-Feng Hsueh, Tainan, TW;
Cheng Yen Weng, Hsinchu, TW;
Yung-Fu Lin, Hsinchu, TW;
Manoj M. Mhala, Hsinchu, TW;
Tao Wen Chung, Zhubei, TW;
Chin-Hao Chang, Hsinchu, TW;
Taiwan Semiconductor Manufacturing Co., Ltd., Hsin-Chu, TW;
Abstract
An analog to digital converter (ADC) comprises an input node having a variable analog input voltage, first and second switched capacitor circuits, an operational amplifier, and a control circuit. The first switched capacitor circuit has first and second capacitors and is coupled to the input node, and the second switched capacitor circuit has third and fourth capacitors and is coupled to the input node. The operational amplifier is configured to be conditionally coupled to only one of the first and second switched capacitor circuits at a time and configured to conditionally provide feedback to the switched capacitor circuits via an output node. The control circuit is coupled to the first and second switched capacitor circuits for conditional coupling to the operational amplifier.