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FPGA Controlled Amplifier Module May 06-14. Team Members Jesse Bartley, CprE Ji w on Lee, EE Michael Hayen, CprE Zhi Gao, EE Client: Teradyne Corp. Faculty advisor: Dr. Chris Chu February 9th , 2005. Presentation Outline. Introductory Materials Project Activity Description

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fpga controlled amplifier module may 06 14
FPGA Controlled Amplifier ModuleMay 06-14
  • Team Members
    • Jesse Bartley, CprE
    • Jiwon Lee, EE
    • Michael Hayen, CprE
    • Zhi Gao, EE
  • Client: Teradyne Corp.
  • Faculty advisor: Dr. Chris Chu

February 9th , 2005

presentation outline
Presentation Outline
  • Introductory Materials
  • Project Activity Description
  • Resources and Schedules
  • Closing Materials

May 06-14

list of terms and definitions
List of Terms and Definitions
  • Bill of Materials – List of Components and their cost
  • DAC – Conversion of a digital signal to an analog sampled signal
  • DC-offset– given signal source does not have the correct 0-crossing but shifted down or up.
  • FPGA – Field programmable gate arrays, allows us to control some the circuits automatically
  • Gain – The ratio of the output amplitude to the input amplitude
  • HDL – Hardware Description Language
  • Noise – Undesired interference in signals
  • Spectrum Analyzer – A computer-based tool that analyzes signals in the frequency domain
  • THD – Total harmonic distortion, the ratio between the powers of all harmonic frequencies above the fundamental frequency

May 06-14

acknowledgement
Acknowledgement
  • Teradyne Corporation
    • Jacob Mertz
    • Ramon De La Cruz
    • Steven Miller
  • Additional Help
    • Jason Boyd
    • Dr. Robert Weber

May 06-14

problem statement approach
Problem Statement & Approach
  • Problem statement:
    • To complete and test the FPGA controlled Amplifier for PC based Spectrum Analyzer developed by previous team
  • Approach:
    • Understand existing design
    • Board assembly and bring-up
    • Make detailed test plan
    • Perform and document tests

May 06-14

operating environment treatment cautions
Operating Environment & Treatment Cautions
  • A climate-controlled laboratory

(At room temperature with low humidity)

  • ESD (Electro Static Discharge)
  • Safe place (locker) to keep equipments

May 06-14

intended users uses
Intended Users & Uses
  • The primary users:
    • Engineers of the Teradyne Corporation
    • Possible derivative could be used outside Teradyne in the future.
  • The product function:
    • As a pre-amplifier for the signal input to a PC based spectrum analyzer device.
    • PC based spectrum analyzer was designed by previous phase

May 06-14

assumptions and limitations
Assumptions and Limitations
  • Assumptions
    • The end product will not be sold to other companies.
    • The design provided by the previous team is valid.
    • Necessary equipment will be available.
  • Limitations
    • Equipments must be available on campus
    • The design must meet specifications

May 06-14

design specifications
DC — 1kHz

Input

+/- 5 volts

6, 20, 40, 60

+/- 10 volts

0.05 dB

< - 105 dB

Total

1.5 nV/rtHz

Input

Voltage

Available

Max Output

Freq Response

Harmonic

> 1kHz - 20 kHz

+/- 5 volts

6, 20, 40, 60

+/- 10 volts

0.05 dB

< - 95 dB

1.5 nV/rtHz

Frequency

Range

Gain Settings

Voltage

Flatness

Distortion

Noise

> 20kHz - 100kHz

+/- 2.5 volts

6, 20, 40

+/- 5 volts

0.10 dB

< -85 dB

2.5 nV/rtHz

Range

(Volts)

(dB)

(Volts)

(dB)

(dB)

(nV/rtHz)

> 100kHz - 1MHz

+/- 2.5 volts

6, 20, 40

+/- 5 volts

0.10 dB

< - 80 dB

3.5 nV/rtHz

> 1MHz - 10MHz

+/- 2.5 volts

6, 20, 40

+/- 5 volts

0.10 dB

< - 70 dB

3.5 nV/rtHz

> 10MHz - 20MHz

+/- 2.5 volts

6, 20

+/- 5 volts

0.10 dB

< -65 dB

3.5 nV/rtHz

> 20MHz - 50MHz

+/- 1.0 volts

6, 20

+/- 2.0 volts

1.00 dB

< -50 dB

5.0 nV/rtHz

> 50MHz - 100MHz

+/- 1.0 volts

6, 20

+/- 2.0 volts

2.10 dB

< -40 dB

5.0 nV/rtHz

Design Specifications

May 06-14

end product other deliverables
End Product & Other Deliverables
  • A fully functional and tested design
  • A functioning prototype
  • Complete test plans
  • A full test report
  • Technical documentation on the design

May 06-14

previous accomplishments
Previous Accomplishments
  • FPGA code
  • General Design
  • Documentation of progress
  • Design Schematic
  • Bill of Materials
  • Partial assembly

May 06-14

present accomplishments future required activities
Present Accomplishments & Future Required Activities
  • Present Accomplishments:
    • Order missing parts
    • Board Assembly
    • Research and Verification
    • Re-vamp FPGA code
    • Make detailed test plan
  • Remaining Activities
    • Test amplifier
    • Produce test reports
    • Deliver finalized design

May 06-14

approaches considered and one used
Approaches Considered and one used
  • Approaches considered:
    • Manual testing and calculation
    • LabVIEW automated testing and Excel calculation
  • Choice: LabVIEW automated testing
    • Repeatability
    • Self documentation
    • Speed/efficiency
    • Extra research required

May 06-14

project definition activities
Project Definition Activities
  • Goals of this project:
    • Research & verify the previous design
    • Meet the specifications
    • Board Assembly
    • Make a detailed test plan
    • Testing
    • Documents all processes

May 06-14

research activities
Research Activities
  • Study previous team’s design
  • Pspice simulation
    • Point of reference during bring up
    • Determine new specifications
    • Determine causes of problems found
  • Test methodologies
    • Noise
    • THD
  • LabVIEW

May 06-14

design activities
Design Activities
  • Verification of design
    • DC Offset Correction
    • Operational Amplifier
  • Tests design
    • DC Offset Correction verification tests
    • Amplifier performance tests
    • Integration testing

May 06-14

implementation activities
Implementation Activities
  • Errors on the PCB were fixed
  • New Pspice Simulation was developed
  • Specifications were adjusted
  • Test strategy was developed according to Client suggestions

May 06-14

testing activities
Testing Activities
  • Location

Microwave Engineering Lab (Room 344, Durham)

  • Specification
    • Pre-determined by the Client
  • Methodology
    • LabVIEW Automated
  • Testing Accuracy
    • Must ensure that equipment is accurate enough
    • Tolerance was calculated from different specifications of components

May 06-14

testing activities1
Testing Activities
  • Specifications needed to be tested
    • Amplification Bandwidth (10Hz – 100MHz)
    • Noise density
    • THD (Total Harmonic Distortion)
    • DC-Offset correction accuracy
    • DC-Offset correction calibration time

May 06-14

testing activities2
Testing Activities
  • List of tests
    • Amplifier gain test
    • Total harmonic distortion test
    • Circuit noise test
    • Amplifier gain flatness and bandwidth test
    • VHDL code behavior test
    • DAC control test
    • Offset calibration test
    • Offset correction verification test

May 06-14

other activities
Other Activities
  • Choosing equipment
    • Finding options
    • Researching specifications
    • Getting access
  • Poster

May 06-14

commercialization
Commercialization
  • Further modifications necessary for commercialization
  • Thorough testing helps improve viability
  • Needs to be packaged with PC based spectrum analyzer for commercialization
  • Price to be determined
  • Potential Market
    • Small technology companies

May 06-14

additional work
Additional Work
  • Recommended additions
    • Full automation may be achieved
    • Frequency response calibration
    • PC control may be added to the product
  • Future integration with Spectrum Analyzer

May 06-14

lessons learned
Lessons Learned
  • Experience gained
    • Test design
    • Test implementation
    • Team Work
    • Working with an outside client
    • Following schedules

May 06-14

risk and management
Risk and Management
  • Test results may be unexpected
    • Conduct proper trouble shooting
  • Loss of a team member (Did not encounter)
    • Work cooperatively
    • Good communication
  • Hardware Damage
    • Quick replacement and backup board
  • Specifications are not practical
    • Define new specifications (with client input)

May 06-14

closing summary
Closing Summary
  • This Team’s Tasks
    • Assemble the prototype
    • Develop FPGA code
    • Test the product
    • Document all details of the process
  • Project will make contribution
    • Teradyne
    • Integrated circuit industry
  • The team will received the following benefits:
    • Technical knowledge
    • Team work
    • Real industry project
  • Overall, this project will benefit both the client and the team

May 06-14

questions
Questions ???

May 06-14

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