HIGH SPEED SEMICONDUCTOR LASER DRIVER CIRCUITS

Title:

HIGH SPEED SEMICONDUCTOR LASER DRIVER CIRCUITS

Document Type and Number:

WIPO Patent Application WO1999001914

Kind Code:

B1

Abstract:

A semiconductor laser driver circuit that provides single supply operation over a wide supply voltage range (e.g., 3V to 5.5V), is capable of high speed data transmission, and is programmable over a wide laser modulation current range (such as 5mA to 60mA). The circuit includes temperature sensitive circuits to adjust for changes in Vbe over the operating temperature range, and to adjust a bias current to maintain transistor gm in the presence of temperature changes. Also included is an adaptive drive feature to accommodate different laser drive currents. Details of these and other features are disclosed.

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Inventors:

LINK GARRY N

Application Number:

PCT/US1998/013201

Publication Date:

May 20, 1999

Filing Date:

June 24, 1998

Export Citation:

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Assignee:

MAXIM INTEGRATED PRODUCTS (US)

International Classes:

H01S5/042; (IPC1-7): H01S3/096; H03K19/013

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