Abstract: This Applica
on Brief is an outline of the detailed informa
on that can be found in the complete version of HFDN (High Frequency Design Note) 028.0. HFDN-028.0 explains in detail how op
cal measurements were performed, and provides guidelines for interfacing the MAX3701 blue laser driver with the blue/violet laser.
Figure 1. Op cal output of a blue/violet laser driven by the MAX3701.
This Application Brief is an outline of the detailed information that can be found in the complete version of HFDN (High Frequency Design Note) 28.0. HFDN-28.0 explains in detail how optical measurements were performed, and provides guidelines for interfacing the MAX3701 with the blue/violet laser.
The complete version of HFDN-28.0 can be obtained by request from the following link: MAX3701 datasheet.
Topics include:
Figure 1. Op cal output of a blue/violet laser driven by the MAX3701.
Background and Purpose
Optical measurements of the MAX3701 driving a blue/violet laser diode were performed prior to the release of the MAX3701 in October of 2003. These measurements verified that the MAX3701 is capable of driving the blue/violet laser with rise/fall times of ≤1ns and overshoot <9% as shown in Figure 1.This Application Brief is an outline of the detailed information that can be found in the complete version of HFDN (High Frequency Design Note) 28.0. HFDN-28.0 explains in detail how optical measurements were performed, and provides guidelines for interfacing the MAX3701 with the blue/violet laser.
The complete version of HFDN-28.0 can be obtained by request from the following link: MAX3701 datasheet.
Topics include:
Optical Evaluation Printed Circuit Board
- Materials and layout of the MAX3701 optical evaluation board
- Schematic diagram of the laser interface
- Connections and geometry of transmission lines
Optical Test Equipment
- Optical test equipment setup
- Mounting information, including thermal heat sink
- Fiber optic patch cable alignment
- Optical-to-electrical converter
- Oscilloscope-recorded waveforms of blue/violet laser driver optical output
Performance Optimization
- Parasitic elements
- Reducing overshoot and ringing on rising and falling edges
- Minimizing inductance
Decreasing the Rise/Fall Time
- Optical rise and fall times limitations
- Analysis and performance relationships
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