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

  • When the inputs of a four-bit D/A converter are connected to a binary up-counter, the output looks like an upward sloping line.


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  • A. True
  • B. False

  • Correct Answer
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    • Interfacing to the Analog World problems

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    • 1. A sample-and-hold circuit is used in D/A conversion.

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    • A. True
    • B. False
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    • 2. The current across the MSB "rung" of a 4-bit R/2R ladder DAC if the reference voltage is 5 v and R is 8 Ω is 625 µA.

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    • A. True
    • B. False
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    • 3. In a digital storage scope, when memory is full, the next data point is lost.

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    • A. True
    • B. False
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    • 4. The amount of deviation of the measured step size from the ideal step size is a measure of linearity.

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    • A. True
    • B. False
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    • 5. The output voltage or current of a digital-to-analog converter is truly an analog signal.

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    • A. True
    • B. False
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    • 6. A data acquisition system may communicate via two common buses: the data bus and the control bus.

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    • A. True
    • B. False
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    • 7. The output of an analog-to-digital converter is a voltage level.

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    • A. True
    • B. False
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    • 8. When the analog input to a tracking A/D converter is at a constant level, the digital output will oscillate.

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    • A. True
    • B. False
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    • 9. A DAC is monotonic if its output increases as its binary input is incremented from one value to the next.

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    • A. True
    • B. False
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    • 10. To be useful, A/D or D/A converters must have meaningful representation of the analog quantity and a digital representation and the digital quantity as an analog representation.

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    • A. True
    • B. False
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