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:
Sep. 13, 2016

Filed:

Dec. 31, 2015
Applicant:

Silicon Laboratories Inc., Austin, TX (US);

Inventors:

Michael H. Perrott, Nashua, NH (US);

Srisai R. Seethamraju, Nashua, NH (US);

Timothy A. Monk, Hudson, NH (US);

Assignee:

Silicon Laboratories Inc., Austin, TX (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/34 (2006.01); H03F 1/02 (2006.01); H03F 3/45 (2006.01); H03M 1/12 (2006.01);
U.S. Cl.
CPC ...
H03F 1/0205 (2013.01); H03F 3/45179 (2013.01); H03M 1/12 (2013.01); H03F 2203/45112 (2013.01);
Abstract

An amplifier topology achieves enhances DC gain to improve linearity while maintaining a good signal to noise ratio. The amplifier includes an amplifier output stage that supplies an amplifier output signal. The amplifier also includes a sense amplifier that augments the output stage. The sense amplifier is coupled to the amplifier input to control current through the output stage in order to achieve reduced voltage variation at the amplifier input as a function of the amplifier output signal voltage as compared to a basic common source amplifier and thereby enhances DC gain of the amplifier.


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