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. 05, 2017

Filed:

Oct. 19, 2012
Applicant:

Texas Instruments Incorporated, Dallas, TX (US);

Inventors:

Saska J. Lindfors, Espoo, FI;

Matti Aaltonen, Veikkola, FI;

Jonne J. Lindeberg, Helsinki, FI;

Assignee:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 3/044 (2006.01); G06F 3/041 (2006.01); H03F 3/08 (2006.01); H03F 3/45 (2006.01); G06F 3/042 (2006.01);
U.S. Cl.
CPC ...
G06F 3/041 (2013.01); H03F 3/08 (2013.01); H03F 3/45475 (2013.01); G06F 3/0421 (2013.01); H03F 2203/45261 (2013.01); H03F 2203/45408 (2013.01); H03F 2203/45512 (2013.01); H03F 2203/45521 (2013.01); H03F 2203/45526 (2013.01); H03F 2203/45528 (2013.01); H03F 2203/45536 (2013.01); H03F 2203/45618 (2013.01);
Abstract

An apparatus is provided. There is an input terminal that is configured to receive an input signal from a optical receiver and an output terminal. First and second integrators are coupled between the input and output terminals. In the second integrator, there is a current source that is coupled to the input terminal, a first resistor that is coupled to the output terminal, and a second resistor. Also, there is an amplifier having a first input, a second input, and an output, where the first resistor is coupled to the first input of the amplifier and where the second input of the amplifier is configured to receive a reference voltage. A transistor is coupled between the current source the second resistor and is coupled to the output of the amplifier at its gate. A capacitor is also coupled between the first input of the amplifier and the second resistor.


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