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

  • 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

  • Correct Answer
  • more or less input voltage is required for the first step than what is specified 

    • Interfacing to the Analog World problems

    Search Results

    • 1. 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
    • 2. What is the output voltage for the circuit shown below?


    • Options
    • A. 10 V
    • B. 20 V
    • C. 30 V
    • D. 40 V
      • Discuss
    • 3. 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
    • 4. What is the disadvantage to using a counter-ramp type ADC?

    • Options
    • A. complex circuit
    • B. high cost
    • C. very slow
      • Discuss
    • 5. 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
    • 6. What type of DAC is shown below?


    • Options
    • A. binary-weighted
    • B. R-2R ladder
      • Discuss
    • 7. 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
    • 8. When comparing the conversions from digital-to-analog and analog-to-digital, the A/D conversion is generally:

    • Options
    • A. less complicated but more time consuming than the D/A conversion.
    • B. more complicated and more time consuming than the D/A conversion.
    • C. less complicated and less time consuming than the D/A conversion.
    • D. more complicated but less time consuming than the D/A conversion.
      • Discuss
    • 9. What is the acquisition time of the AD1154 sample-and-hold IC?

    • Options
    • A. 1.5 µs
    • B. 2.5 µs
    • C. 3.5 µs
    • D. 4.5 µs
      • Discuss
    • 10. The primary disadvantage of the simultaneous A/D converter is:

    • Options
    • A. that it requires the input voltage to be applied to the inputs simultaneously
    • B. the long conversion time required
    • C. the large number of output lines required to simultaneously decode the input voltage
    • D. the large number of comparators required to represent a reasonable sized binary number
      • Discuss

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