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Interfacing to the Analog World problems

  • 1. A simultaneous A/D converter is also known as a(n) ________ A/D converter.

  • Options
  • A. flash
  • B. synchronous
  • C. comparator
  • D. asynchronous
    • Discuss
  • 2. What is the resolution, in percent, of a 12-bit DAC?

  • Options
  • A. 8.33
  • B. 0.049
  • C. 0.000488
  • D. 0.083
    • Discuss
  • 3. An analog quantity varies from 0?7 V and is input to a 6-bit A/D converter. What analog value is represented by each step on the digital output?

  • Options
  • A. 0.111 V
  • B. 1.17 V
  • C. 0.109 V
  • D. 0.857 V
    • Discuss
  • 4. What is the disadvantage to using a counter-ramp type ADC?

  • Options
  • A. complex circuit
  • B. high cost
  • C. very slow
    • Discuss
  • 5. What is the linearity of a D/A converter?

  • Options
  • A. It is the reciprocal of the number of discrete steps in the D/A output.
  • B. It is the comparison between the actual output of the converter and its expected output.
  • C. It is the converter's ability to resolve between forward and reverse steps when sequenced over its entire range of inputs.
  • D. It is the deviation between the ideal straight-line output and the actual output of the converter.
    • Discuss
  • 6. What is the output voltage for the circuit shown below?

    Digital Electronics Interfacing to the Analog World: What is the output voltage for the circuit shown below?


  • Options
  • A. 10 V
  • B. 20 V
  • C. 30 V
  • D. 40 V
    • Discuss
  • 7. What function is performed by the block labeled X in the given figure?

    Digital Electronics Interfacing to the Analog World: What function is performed by the block labeled X in the given figure?


  • Options
  • A. Analog-to-digital conversion
  • B. Digital-to-analog conversion
  • C. Audio ON/OFF control
  • D. Power supply for the audio amplifier
    • Discuss
  • 8. Describe offset error for a DAC.

  • Options
  • A. missing codes
  • B. error in the slope of the output staircase waveform
  • C. more or less input voltage is required for the first step than what is specified
    • Discuss
  • 9. What type of DAC is shown below?

    Digital Electronics Interfacing to the Analog World: What type of DAC is shown below?


  • Options
  • A. binary-weighted
  • B. R-2R ladder
    • Discuss
  • 10. Which of the following characterizes an analog quantity?

  • Options
  • A. Discrete levels represent changes in a quantity.
  • B. Its values follow a logarithmic curve.
  • C. It can be described with a finite number of steps.
  • D. It has a continuous set of values over a given range.
    • Discuss

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