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Published byDina York Modified over 9 years ago
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Mixed-Signal Option for the Teradyne Integra J750 Test System May08-12 Emily Evers Vincent Tai
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Problem Statement The Teradyne system has been updated to allow for analog circuits to be tested, but there are no working test files for ADC, DAC and Op-Amps.
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Concept Sketch and System Block Diagram Hardware IG-XL Software Devices Documentation Hardware Software
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System Description Devices Analog-to-Digital (ADC) Digital-to-Analog (DAC) Op-Amp Hardware Device Interface Board (DIB) Connects daughter board to tester via pogo pins Daughter Board Connects device to DIB IG-XL Software Test Plan Pin and Channel Map AC and DC Specs Timing Pattern Documentation Updated Cookbook Commented IG-XL files 4
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User Interface and Operating Environment User Interface IG-XL Software Cookbook DIB Operating Environment The room environment needs to be kept at a consistent temperature of 25°C ± 3° Electrostatic discharge wrist bands must be worn when using the tester Access code
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Requirements Functional Cookbook be written for the new users Testing procedures covers the devices: Analog-to-Digital (ADC) Digital-to-Analog (DAC) Op-Amp Nonfunctional Documentation in English Test program for devices and similar ones Cookbook for specified devices Easy to trouble shooting
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Market Survey Teradyne website Previous team’s website Teradyne lab manuals
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Work Breakdown Structure Review Status Previous work Teradyne Training Material IC Interface Daughter Board DIB Test Plan Development Create IG-XL code for testing devices Debug previous code Add current limits New test plans Execute testing Documentation Create Mixed-Signal Option Cookbook Create maps for daughter board, DIB and socket converters Reporting
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Project Schedule
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Resource Requirements Resource Team Faculty Advisor: Dr. Weber Faculty Advisor: Dr. Smith Team effort Review Status IC InterfaceDACADCOp-AmpDocumentationReportingTotal hours Emily Evers30.751772951531.5135.25 Vincent Tai2218.51020151015110.5 Total52.7535.51749202546.5245.75 10
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Resource Requirements Financial requirements ItemCost Materials Poster$35.00 Devices$130.00 Daughterboard$200.00 Subtotal$365.00 Labor($10.00/hr) Emily Evers$1352.5 Vincent Tai$1105 Subtotal$3562.5 Total$3927.5 11
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Risks Risk: Problems learning program Limited team members Risk Management: Read Teradyne manuals and previous groups documentation Time management
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Design Method InputsProcessOutputs Parts ADCDACOp-Amp AD7892 AD7470 AD5440 AD5447 AD823 Hardware Software Cookbook ADC & DAC INL & DNL Results Input/Output Signals Calculations Op-Amp Bandwidth Offset Voltages Intermodulation Tests IG-XL ProgramJ750 Tester Interfaces Computer DIB Daughterboard Socket converter
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Input and Output Specification Input DAC LTC1450 Op-Amp AD823 ADC AD7470 Output Input signals Output signals Calculations ADC INL and DNL DAC INL and DNL Op-Amp Offset Voltage Bandwidth Intermodulation Distortion
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Hardware, Software, and User Interface Specification Hardware Daughterboard DIB Socket converter User Interface Updated Cookbook IG-XL test files Software Pattern Tool IG-XL Pin and Channel Maps AC, DC, and Global Specs Time sets and Pin Levels Test Procedures
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Test Specification Component Test Test individual IG-XL source and capture System Test Test IG-XL test file and pattern
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17 Detailed Design DAC Schematic
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18 Detailed Design Op-Amp Schematic
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19 Detailed Design ADC Schematic
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20 Build – Pin Map Define pins on IG-XL
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21 Build – Channel Map Define connections from daughterboard to tester DAC
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22 Build – Channel Map Op-Amp
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23 Build – Channel Map ADC
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24 Build – Board Wiring
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25 Build – AC Specs Specify AC variables
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26 Build – DC Specs Specify DC variables
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27 Build – Pin Levels User specify voltage level for high/low logic level.
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Build – Time Sets Create timing basis for pattern Allow for testing on digital pins 28
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Build – Test Procedures Set up user defined tests 29
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Build – Test Instances Set up IG-XL template tests Input data for user defined tests 30
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Build – Pattern Uses time sets from IG-XL file User defined inputs Can be used to start analog and digital source and capture signals 31
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Build – Pattern Several sheets are used in the pattern file Pin Lists Imports (time sets) Instruments 32
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Test System testing was done using an oscilloscope 33
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Test
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Teradyne System Testing Functional Test Continuity Test 35
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Test Functional and Continuity Outputs 36
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37 Earned Value Analysis Budgeted Cost of Work Scheduled: $4365 Actual Cost of Work Performed: $3650 Budgeted Cost of Work Performed: $3895 Cost Variance: $3530 Schedule Variance: -$470 Cost Performance Index: 1.067 Schedule Performance Index: 89.23%
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38 Lessons Learned Team Work The value of hands-on experience Verify Input Signals: Use oscilloscope and multimeter.
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Conclusions Accomplishments Updated CprE 210 D-flip flop test Created an interface mapping of the current boards ADC Wired daughter board Created IG-XL test file Ran tests
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40 Conclusion Accomplishments DAC Wired daughterboard Created IG-XL test file Op-Amp Wired daughterboard Created IG-XL test file Updated Cookbook
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Conclusions Future Work Run tests on DAC and Op-amp Fix if needed Finish ADC test file
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