Gigabit Ethernet PMD

1
Gigabit Ethernet PMD

• Opto-Link, Inc. Status Report 7
• Andrew Meyerson
• March 24, 2005

2
Gigabit EthernetProgress Summary

• Completed Tasks
• Received Parts
• Built first board
• Began testing on first board
• First Draft of Report
• New Website
• Spring Break Fun

• Next Weeks Tasks
• Troubleshoot first board
• Build, test, and troubleshoot second and third
  board designs
• Design review for next fabrication
• Order additional parts

3
Gantt Chart
4
Board Construction

• Boards and all of the parts arrived either before
  or over Spring Break
• Construction began upon arrival from Spring Break
• First complete board finished Tuesday afternoon

5
Board Construction (cont)

• Each board has three Tx and Rx circuits
• One common anode (AOC VCSEL)
• One common cathode (Emcore VCSEL)
• One aggressive design
• First circuit constructed and tested was common
  anode

6
Board Layout Review
7
Board Construction (cont)

• 0603 parts are tinywas it a good idea?
• Found a mistake on the board and used board
  surgery to attempt to fix it

8
Board Testing

• Rx component works
• Tx has problems
• Board surgery did not work well enough
• There is a short somewhere on the board that we
  need to find

9
Current Budget
Digi-Key BC1252CT-ND 0.02900 100 2.90
Digi-Key RHM20.0HCT-ND 0.07600 10 0.76
Digi-Key RHM100HCT-ND 0.07600 10 0.76
Digi-Key RHM115HCT-ND 0.07600 10 0.76
Digi-Key 3296W-102-ND 2.50000 5 12.50
Digi-Key 3296W-253-ND 2.50000 5 12.50
Digi-Key 490-1034-1-ND 0.12000 10 1.20
Express PCB 59.00000 2 118.00
Advanced Optical Components HFE419x-541 14.50000 4 58.00
Advanced Optical Components HFD3180-103 10.00000 4 40.00
Digi-Key CP-002APJ-ND 0.73000 6 4.38
Jameco 188525 4.20000 10 42.00
Shipping 13.00
Total 302.26
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Next Week

• Troubleshoot AOC VCSEL circuit
• Build Emcore circuit
• Build aggressive circuit
• Design Review of first circuits
• Order more parts?
• Stay Classy