Remote Design, Testing and Evaluation of an Integrated Circuit Differential Amplifier Experiment

1. Remote Design, Testing and Evaluation of an Integrated Circuit Differential Amplifier Experiment U. J. Strasilla, S. Hamedi-Hagh Department of Electrical Engineering San Jose State University San Jose, California

2. Do you know the way to San Jose? San Jose

3. San Jose State University

4. SJSU College of Engineering

5. Abstract • Description of our Remote Lab in the Dept of Electrical Engineering: • It duplicates all features of a real lab • It gives tutorials on the design of an integrated differential amplifier • Upon signup it randomly assigns the amplifier design specifications (from a set of specs) • When the student submits the design it checks whether specs are met

6. Abstract (cont’d) • It “wires up” circuit based on prebuilt circuit and based on resistor insertion using relays • It allows student to make circuit measurements using remote controlled function generators and oscilloscope • It compares student measurements against specs • It verifies student measurements by LabView controlled automatic measurements • It provides final evaluation (by comparing predicted, student measured, auto-test values against specs • It determines final experiment grade

7. Flow Chart Comparing Existing Lab with Remote Lab http://www.ericstrasilla.com/Flash/medialab12fps.html

8. Equipment required at home and in Remote Lab http://www.ericstrasilla.com/Flash/remotelab.html

9. IC Design Lab Experiments • 1. RC single Time Constant Networks • 2. Current Mirrors • 3. Differential Amplifiers • 4. Transconductance Amplifier • 5. Feedback Amplifier • 6. Op Amp • 7. Individual projects

10. IC Design Lab Experiments

11. Diff Amp Current Mirror

12. DIFFERENTIAL AMPLIFIER CIRCUIT

13. Experiment Procedure

14. Diff Amp Design Specs

15. Diff Amp Design Equations RC3= (VCC-VC3)/IC3 (1) IC5 = IC3 + Irout (2) Irout = VC3/R o (3) RC5= (VEE-VC3)/IC3 (4) ADM = RC3/RD (5) ACM = RC3/ro (6)

16. Transistor Curve Tracer

17. Traditional Real Lab Test Station Equipment

18. Traditional Real Lab Test Station

19. EE124 Lab at SJSULabView Workshop in the IC Design Lab http://e258cam.engr.sjsu.edu

20. The Remote Measurement Test Station and Server

21. Remote Lab Components

22. Remotely operated Differential Amplifier

23. Protoboard with 2 prewired circuits

24. Diff Amp Instrument

31. Remote Lab Tutorial 10 minutes http://www.youtube.com/watch?v=3r0a_2pmnJQ Remote Lab Demo 4 minutes http://www.youtube.com/watch?v=VhCJYtvYurM

32. Remote Lab Related Links http://www.engr.sjsu.edu/ee124lab Remote Lab Website: http://www.engr.sjsu.edu/ee124lab/remotelab.htm

33. Remote LabDepartment of Electrical EngineeringSan Jose State University Remote Lab: Publications: Rev2010 Paper Flow Charts: Remotelab\Flow Charts for REV2010 Paper.doc LabView Programs Tutorials Link to Remote Lab on Differential Amplifier: http://e258-03.engr.sjsu.edu/rlab.html

34. Summary Remote Lab Diff Amp Design Project • Transition from Real Lab to Remote Lab • Differential Amplifier Design Problem • From Specs to Circuit Design • Real Lab • Remote Lab Implementation • Specs > Design > Circuit > Measurement • Automatic Measurement > Evaluation • Demo

35. Next Step • Resolve LabView Problems with transportability • Increase Number of Remote Test Stations • Each experiment should have remote station • Initial use only at San Jose State • Collaboration with other universities • Obtain funding (NSF Grants?) • Expand Remote Lab for Remote Training • Expand Remote Lab to Pre-College clients

36. Thankyou

37. Remote Test of Feedback Amplifier http://e258-10.engr.sjsu.edu/FeedbackFront.html Demo of Remote Relay Switch http://e258-03.engr.sjsu.edu/Relay.html

38. EE124 Lab Website http://www.engr.sjsu.edu/ee124lab

39. http://e258-10.engr.sjsu.edu/Feedback.html

40. RC Network for Time Constant and Cutoff Frequency Measurement http://e258-03.engr.sjsu.edu/Relay.html

41. http://www.engr.sjsu.edu/ee124lab