Project GabEECE 135 – Spring 2005

Omar Al-JaddaPatrick CrosbyAdam Durity

Rahmin Sarabi

Progress Report

Finalized Gantt Chart

Drafted Tx Schematic Submitted for first review

Ordered Major Components

Drafted Bill of Materials

Website now Live

Final Gantt ChartID Task Name Start Finish % Complete

1 Background Research Wed 1/12/05 Wed 4/27/05 46%

2 IEEE 802.3 Standard Tue 1/18/05 Fri 1/28/05 100%

3 VCSELs and PDs Mon 1/24/05 Mon 1/31/05 100%

4 Miscellaneous Wed 1/12/05 Wed 4/27/05 36%

5 Test Eval Board Tue 1/25/05 Mon 1/31/05 100%

6 Build & Test Practice Board Tue 2/1/05 Tue 2/8/05 100%

7 Optical Link Budget Mon 1/24/05 Thu 2/10/05 100%

8 Choose Components Mon 1/31/05 Mon 2/7/05 100%

9 Order Parts Mon 2/7/05 Fri 2/25/05 50%

10 Order VCSELs and PDs Mon 2/7/05 Fri 2/11/05 100%

11 Order Other Parts Mon 2/21/05 Fri 2/25/05 0%

12 Schematics Fri 2/11/05 Thu 2/24/05 50%

13 PCB Mon 2/14/05 Mon 3/21/05 0%

14 Design Mon 2/14/05 Fri 3/11/05 0%

15 Design Review Mon 2/21/05 Fri 3/11/05 0%

16 Order Mon 3/14/05 Mon 3/21/05 0%

17 Midterm Report Mon 2/28/05 Fri 3/25/05 0%

18 Board 1 Mon 3/21/05 Mon 4/4/05 0%

19 Construct Board Mon 3/21/05 Wed 3/23/05 0%

20 Test Board Thu 3/24/05 Mon 4/4/05 0%

21 Board 2 Mon 4/4/05 Tue 4/26/05 0%

22 Design Modifications Mon 4/4/05 Thu 4/14/05 0%

23 Construct Board Fri 4/15/05 Tue 4/19/05 0%

24 Test Board Wed 4/20/05 Tue 4/26/05 0%

25 Final Report Mon 4/18/05 Wed 4/27/05 0%

26 Midterm Exam Tue 2/22/05 Tue 2/22/05 0%

27 Midterm Report Fri 3/25/05 Fri 3/25/05 0%

28 Final Report Wed 4/27/05 Wed 4/27/05 0%

46%

100%

100%

36%

100%

100%

100%

100%

50%

100%

0%

50%

0%

0%

0%

0%

0%

0%

0%

0%

0%

0%

0%

0%

0%

2/22

3/25

4/27

2 9 16 23 30 6 13 20 27 6 13 20 27 3 10 17 24 1 8 15 22 29 5 12 19Jan '05 Feb '05 Mar '05 Apr '05 May '05 Jun '05

Tx Schematic - Rev. 1.0

Schematic Design Theory Must decouple all the power connections of the circuit to ensure

that high frequency noise on the power line does not interfere

with sensitive parts of the circuit. Capacitors near every power and ground connection.

POT1 is used to change the magnitude of the output

POT2 is used to control the output power of the VCSEL

The three element filter (C3,L1,C4) in the top left provides additional protection from VCC noise by bandlimiting the signal

In series with each potentiometer is a 'limiting resistor' that should protect the circuit if the POT resistance too low

Ordered Major Components

VCSEL: AOC HFE419x-441

ROSA: AOC HFD3180-108 Expected Delivery: 2/22/05

Bill of Materials

Vendor Item Number Quantity Description Unit Price Amount 1k Price

Digikey CP-002AHPJ-ND 1 Power Connector 0.702$ 0.70$ 0.70000 Digikey PCC103BNCT-ND 50 CAP 10000PF 0.054$ 2.70$ 0.01600 Digikey 311-100CCT-ND 10 RES 100 OHM 1/8W 0.800$ 8.00$ 0.01682 Digikey 311-115CCT-ND 10 RES 115 OHM 1/8W 0.800$ 8.00$ 0.01682 Digikey RR12Q24DCT-ND 10 RES 24 OHM 1/10W 0.151$ 1.51$ 0.03190 Digikey 3296W-102-ND 5 POT 1.0K OHM 3/8Ó 2.500$ 12.50$ 1.09200 Digikey 3296W-253-ND 5 POT 25K OHM 3/8Ó 2.500$ 12.50$ 1.09200 Maxim MAX3287 1 Laser Driver 4.430$ 4.43$ 4.00000 Maxim MAX3264 1 Limiting Amp 4.430$ 4.43$ 4.00000 AOC HFE4191-541 4 VCSEL 14.500$ 58.00$ 14.50000 AOC HFD3180-102 4 ROSA 10.000$ 40.00$ 10.00000

Jameco J145373 4 SMA Connectors 7.390$ 29.56$ 6.65000 Express PCB custom 1 PCB 59.950$ 59.95$ 59.95000

Mouser BLM11HA102SG 50 Murata Inductors 0.110$ 5.50$ 0.04200

TOTAL: 247.78$

Project Website

Functional and up-to-date contenthttp://www.ee.duke.edu/~mbrooke/ECE135/2005_01_Spring/G1/

Upcoming Week Finalize Tx Schematic Draft and Finalize Rx Schematic

Initiate Board Design Target - Submit for review 2/28/05

Order Remaining Components