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Home ‣ Digital Electronics ‣ Interfacing to the Analog World Comments
  • Question

  • What is the resolution, in percent, of a 12-bit DAC?


  • Options
  • A. 8.33
  • B. 0.049
  • C. 0.000488
  • D. 0.083

  • Correct Answer
  • 0.049 

    • Interfacing to the Analog World problems

    Search Results

    • 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 conversion time of a flash converter?

    • Options
    • A. 20 µs
    • B. 10 µs
    • C. 1 µs
    • D. The conversion takes place continuously.
      • Discuss
    • 3. The quantization error in an analog-to-digital converter can be reduced by:

    • Options
    • A. increasing the number of bits in the counter and DAC.
    • B. decreasing the number of bits in the counter and increasing the number of bits in the DAC.
    • C. increasing the number of bits in the counter and decreasing the number of bits in the DAC.
    • D. decreasing the number of bits in the counter and DAC.
      • Discuss
    • 4. The output of a basic 4-bit input digital-to-analog converter would be capable of outputting:

    • Options
    • A. 16 different values of voltage or current that are not proportional to the input binary number
    • B. 16 different values of voltage or current that are proportional to the input binary number
    • C. 32 different values of voltage or current that are not proportional to the input binary number
    • D. 32 different values of voltage or current that are proportional to the input binary number
      • Discuss
    • 5. What is the major advantage of the R/2R ladder DAC as compared to a binary-weighted-input DAC?

    • Options
    • A. It has fewer parts for the same number of inputs.
    • B. It is much easier to analyze its operation.
    • C. It uses only two different resistor values.
    • D. The virtual ground is eliminated and the circuit is therefore easier to understand and troubleshoot.
      • Discuss
    • 6. 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
    • 7. What is the disadvantage to using a counter-ramp type ADC?

    • Options
    • A. complex circuit
    • B. high cost
    • C. very slow
      • Discuss
    • 8. 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
    • 9. What is the output voltage for the circuit shown below?


    • Options
    • A. 10 V
    • B. 20 V
    • C. 30 V
    • D. 40 V
      • Discuss
    • 10. 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

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