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:
Dec. 15, 2015
Filed:
May. 15, 2014
Applicant:
Zhengxiang Wang, Suzhou, CN;
Inventor:
Zhengxiang Wang, Suzhou, CN;
Assignee:
FREESCALE SEMICONDUCTOR, INC., Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/04 (2006.01); H03K 5/08 (2006.01); H03F 3/30 (2006.01);
U.S. Cl.
CPC ...
H03K 5/08 (2013.01); H03F 3/301 (2013.01); H03F 2200/18 (2013.01);
Abstract
An AC-inverting amplifier for a waveform conversion circuit includes a first MOS transistor of a first conductivity type having a gate that receives an input signal, a drain that provides an inverted amplified output signal, and a source coupled to a first power supply voltage. A current source provides a first bias current and a second bias current in proportion to the first bias current. The second bias current is coupled to the drain of the first MOS transistor to bias the first MOS transistor. The first bias current has a magnitude that is determined by a DC voltage applied at the gate of the first MOS transistor.