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.

Date of Patent:
Jun. 01, 2010

Filed:

Dec. 31, 2007
Applicant:

Jr-ching Lin, Hsinchu, TW;

Inventor:

Jr-Ching Lin, Hsinchu, TW;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A source follower includes first through third switches, first and second transistors, and a first capacitor. The first switch is used to determine whether or not to couple the source of the first transistor with an input signal. The second switch is used to determine whether or not to couple a gate and a drain of the first transistor with a first voltage. A first end of the first capacitor is coupled with a first control signal, and a second end of the first capacitor is coupled to the drain of the first transistor and a gate of the second transistor. The third switch is used to determine whether to or not couple a drain of the second transistor with the first voltage, and a source of the second transistor serves as an output of the source follower.


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