US Patent 7457335 Fast loop laser diode driver

Patent 7457335 was granted and assigned to Exar Corporation on November, 2008 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

Exar Corporation

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7457335

Date of Patent

November 25, 2008

Patent Application Number

11356598

Date Filed

February 17, 2006

Patent Primary Examiner

‌

Minsun Harvey

Patent abstract

A laser diode driver circuit can comprise fast loop portion and a closed-loop portion. The closed-loop driver portion can provide a part of the current for a laser diode. The closed-loop drive portion output can be independent of a photodetector. The fast-loop driver portion can provide a second part of the current for the laser diode. The fast-loop driver portion can use the output of the photodiode to determine the output of the fast-loop driver portion.

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