Invention Grant
- Patent Title: Laser diode read driver
- Patent Title (中): 激光二极管读取驱动器
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Application No.: US13595670Application Date: 2012-08-27
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Publication No.: US08406263B2Publication Date: 2013-03-26
- Inventor: Douglas Warren Dean
- Applicant: Douglas Warren Dean
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Lawrence J. Bassuk; W. James Brady; Frederick J. Telecky, Jr.
- Main IPC: H01S3/00
- IPC: H01S3/00

Abstract:
A laser diode read driver includes a first transistor producing a first voltage in response to receiving a first current signal. A transconductor has a first input coupled to receive the first voltage and produces a second current signal in response to differences between signals received on the first input and a second input. A second transistor is coupled to the second input and produces a third current signal in response to receiving the second current signal. A third transistor is coupled to the second transistor and the second input and produces an output current signal in response to receiving the third current signal. The first transistor is scaled to the first transistor by the inverse of a gain factor. First and second resistors are coupled between the first and third transistors and a low voltage supply, and are scaled to each other by the gain factor.
Public/Granted literature
- US20130039373A1 LASER DIODE READ DRIVER Public/Granted day:2013-02-14
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