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:
Oct. 17, 2017

Filed:

Oct. 11, 2016
Applicant:

Rambus Inc., Sunnyvale, CA (US);

Inventor:

Yikui Jen Dong, Cupertino, CA (US);

Assignee:

Rambus Inc., Sunnyvale, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 5/007 (2006.01); H04L 25/03 (2006.01); H04L 25/02 (2006.01); H04L 12/863 (2013.01); H04L 25/06 (2006.01);
U.S. Cl.
CPC ...
H04L 25/03019 (2013.01); H04L 25/0292 (2013.01); H04L 25/0296 (2013.01); H04L 25/06 (2013.01); H04L 47/50 (2013.01); H03K 5/007 (2013.01);
Abstract

An on-chip AC coupled receiver with baseline wander compensation. The receiver may be used for either single ended or differential signals. The receiver includes an input terminal to receive an input signal. AC coupling circuitry is between the input terminal and a node and couples the input signal into a coupled signal at the node. A control loop senses low frequency signal content at the node and uses a linear buffer in adjusting the coupled signal at the node based on the low frequency signal content. The operation of the control loop compensates for potential baseline wander in the coupled signal. An input stage to recovers data from the coupled signal at the node.


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