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:
Mar. 01, 2016

Filed:

Mar. 04, 2014
Applicant:

Conexant Systems, Inc., Irvine, CA (US);

Inventors:

Brian W. Friend, Carlsbad, CA (US);

Lorenzo Crespi, Costa Mesa, CA (US);

Kyehyung Lee, Irvine, CA (US);

Assignee:

CONEXANT SYSTEMS, INC., Irvine, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03G 3/30 (2006.01); H03F 1/02 (2006.01); H03F 3/187 (2006.01); H03F 3/45 (2006.01); H03G 1/00 (2006.01);
U.S. Cl.
CPC ...
H03F 1/0211 (2013.01); H03F 3/187 (2013.01); H03F 3/45192 (2013.01); H03F 3/45475 (2013.01); H03F 3/45179 (2013.01); H03F 2203/45112 (2013.01); H03F 2203/45494 (2013.01); H03F 2203/45528 (2013.01); H03G 1/0088 (2013.01);
Abstract

A circuit comprising a peak detector configured to receive a positive voltage input, a negative voltage input and a reference current source input and to output a peak signal data value. A fast attack current source control coupled to the peak detector and configured to generate a current source control signal as a function of the peak signal data value. A slow decay control coupled to the fast attack current source control and configured to reduce the current source control signal based on a predetermined or user-selected decay rate. A variable current source coupled to the fast attack current source control and configured to generate a variable current as a function of the current source control signal. Amplifier circuitry coupled to the variable current source, the amplifier circuitry configured to receive the variable current.


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