ANALOG TO DIGITAL CONVERTER

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ANALOG TO DIGITAL CONVERTER

• Group 8
• Advisor Dr. Krompholz
• Members
• Russell Vela
• Linda Ekhator
• Yasser Khan

2
Objective

• Design and construct an A/D converter with a 3
  bit output using voltage comparators.

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Additional Components

• Incorporation of MOSFET into 3rd bit design for
  use as a switch.
• Use of diodes for directing voltage traffic.

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What is a 3bit ADC?

• Converts analog signal into a digital output.
• Depending on input voltage, each bit reacts
  differently.

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2-bit ADC Design
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3rd Bit Design
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3-bit ADC Design
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Bits 1 and 2 Waveform
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Bit 3 Waveform
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Full 3-bit Waveform
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Digital Waveform Comparison
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Constructed 3 bit circuit
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Stand Alone Equipments Used for testing

• Oscilloscope
• Function Generator
• Power Supply
• Multi-Meter

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Bit 1 on Oscilloscope
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Bit 2 on Oscilloscope
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Bit 3 on Oscilloscope
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Elvis Testing
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Elvis Functions used for testing

• Oscilloscope
• Function Generator
• Power Supply
• LED Display
• Multi-Meter

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Bit 1 on Elvis Oscilloscope
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Bit 2 on Elvis Oscilloscope
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Bit 3 on Elvis Oscilloscope
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Stand Alone vs. Elvis
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3bit Circuit in Action
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Gantt Chart
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Budget
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References

• 1 D.A. Johns and K. Martin, Analog Integrated
  Circuit Design, Chapters 11 and 12, John
• Wiley Sons, Inc., New York 1997.
• Dr. Andreas A. Neuber, Texas Tech University
  2004.