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:
May. 07, 2002
Filed:
Jun. 28, 2001
Dar-Chang Juang, Hsinchu, TW;
Sunplus Technology Co., Ltd., Hsin-Chu, TW;
Abstract
A CMOS class AB amplifier has an adaptive level shift circuit, a compensated capacitor, and an output transistor pair. The adaptive level shift circuit includes a current mirror circuit, a diode transistor, a switch transistor, and a current source transistor. The diode transistor is utilized as a bias for driving the switch transistor so as to provide a relatively low linear resistor for being used as a feedback. Therefore, the Q (quality factor) value of the gyration inductance can be effectively reduced and the occurrence of the peak gain can be suppressed effectively, so as to maintain a desired gain margin.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile