Determine the approximate value of RF which results in accurate digital to analog conversion.

  1. Take the screenshots of Vout measurements for the input/output combination for each of the above 8-bits.
  2. Answer the following questions:

 

  1. Determine the approximate value of RF which results in accurate digital to analog conversion.
  2. Write the expression for Vout in terms of Vin, RF and R for each bit. Also, express Vout in terms of all 8 input voltages.
  3. Starting from the least significant bit to the most significant bit, what is the effect of feedback resistance on the output voltage?
  4. From your measurements, does increase in the digital value result in increase in analog value? Please explain.
  5. Is the voltage gain of the op Amp different for each bit? Please explain why?

 

  1. Create a new word document called “Lab5_StudentID.docx” with your GID substituted into the file name.
  2. Verify all calculations from analysis and measurements from simulations. Save the results along with the table and paste the screen captures in the word document. Make sure to answer the questions.
  3. Upload file “Lab5_StudentID” in Blackboard.

 

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