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. 29, 2011
Filed:
Sep. 17, 2009
Jui-yuan Tsai, Tai-Nan, TW;
Cheng-jui Chen, Tao-Yuan Hsien, TW;
Jui-Yuan Tsai, Tai-Nan, TW;
Cheng-Jui Chen, Tao-Yuan Hsien, TW;
Realtek Semiconductor Corp., HsinChu, TW;
Abstract
An analog front-end processing apparatus capable of sharing pins includes a plurality of positive pins, a negative pin, a plurality of positive clamping circuits, a negative clamping circuit, a plurality of sample and hold circuits and a plurality of adjusting circuits. The positive clamping circuits have positive signals fixed at their corresponding target positive voltages. The negative clamping circuit has a negative signal fixed at a first reference voltage. Each sample and hold circuit has a positive input terminal and a negative input terminal, wherein a voltage difference between the two input terminals is substantially equal to a voltage difference between the corresponding target positive voltage and the first reference voltage during a sample period, and a voltage difference between the two input terminals is equal to a voltage difference between the corresponding target negative voltage and a second reference voltage during a hold period.