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:
Sep. 26, 2006
Filed:
Apr. 12, 2005
Yi-bin Hsieh, Taipei, TW;
Wen-hui Chen, Taipei, TW;
Yi-Bin Hsieh, Taipei, TW;
Wen-Hui Chen, Taipei, TW;
VIA Technologies Inc., Taipei, TW;
Abstract
Transconductance filter circuits. A transconductor includes two inputs for receiving two differential voltages, and a first output terminal and a second output terminal for outputting two differential signals. A first capacitor array includes at least one first switch capacitor unit controlled by a first signal, and a first equivalent capacitor coupled between the first output terminal and the second output terminal when the first signal is enabled. two second capacitor arrays each includes at least one second switch capacitor unit controlled by a second signal, two second equivalent capacitors respectively coupled between the first output terminal and a ground level, and between the second output terminal and the ground level when the second signal is enabled. The capacitance of the first equivalent capacitor exceeds that of the two second equivalent capacitors connected in serial.