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. 24, 2015

Filed:

Dec. 18, 2012
Applicant:

Broadcom Corporation, Irvine, CA (US);

Inventors:

Mohyee Mikhemar, Aliso Viejo, CA (US);

Amir Hadji-Abdolhamid, Aliso Viejo, CA (US);

Hooman Darabi, Laguna Niguel, CA (US);

Assignee:

Broadcom Corporation, Irvine, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/18 (2006.01); H03G 3/00 (2006.01); H03F 1/22 (2006.01); H03F 3/195 (2006.01); H03F 3/45 (2006.01);
U.S. Cl.
CPC ...
H04B 1/18 (2013.01); H03G 3/00 (2013.01); H03F 1/223 (2013.01); H03F 3/195 (2013.01); H03F 3/45179 (2013.01); H03F 3/45475 (2013.01); H03F 2200/294 (2013.01); H03F 2200/336 (2013.01); H03F 2203/45394 (2013.01); H03F 2203/45512 (2013.01); H03F 2203/45528 (2013.01); H03F 2203/45631 (2013.01); H03F 2203/45686 (2013.01); H03F 2203/45702 (2013.01);
Abstract

A circuit for a low-noise interface between an amplifier and an analog-to-digital converter (ADC) may comprise a capacitor element having a capacitance of C coupled between a first and second output node of the amplifier. A first resistor Rmay be coupled in parallel with the capacitor. A second resistor Rmay be coupled between the first output node of the amplifier and a first input node of the ADC. A third resistor Rmay be coupled between the second output node of the amplifier and a second input node of the ADC. Initial values of the resistances R, R, and Rmay be selected to provide a desired value Rfor a load resistance of the amplifier. A value of the capacitance C may be selected so that, in combination with the desired value R, a desired bandwidth for the amplifier is achieved.


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