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

  • In a binary-weighted D/A converter the sum of all the currents from the binary weighted resistors flows through the operational amplifier.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • False 

    • Interfacing to the Analog World problems

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    • 1. A D/A converter changes things such as temperature variations into digital quantities.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. When analog inputs from several sources are to be converted, a multiplexing technique can be used so that one ADC may be time-shared.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. In a counter-ramp A/D converter, the end-of-conversion line must be tied back to the clear input of the counter to change the circuit to perform continuous conversions.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. An operational amplifier is used as a comparator.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. The time required to complete a conversion cycle is called conversion time.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. The main advantage of the SAR ADC method is its high speed.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. Resolution in the analog output of a DAC is primarily dependent on the number of input binary bits.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. The delay between a change on the digital input of a DAC and the appearance of the change on the output is called settling time.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. The DSO ________, ________, and ________ analog waveforms.

    • Options
    • A. filters, conditions, sends
    • B. levels, stores, weighs
    • C. sends, receives, translates
    • D. digitizes, stores, displays
      • Discuss
    • 10. The AD7524, a CMOS IC available from several IC manufacturers, is an eight-bit D/A converter that uses a(n) ________.

    • Options
    • A. sample-and-hold circuit
    • B. R/2R ladder network
    • C. multiplexer
    • D. 10 µs clock
      • Discuss

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