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  • Question

  • What is the current in R1 and the current in R2 for the circuit shown below?

    What is the current in R1 and the current in R2 for the circuit shown below? I1 = 0.416 mA, I2 = 0.4


  • Options
  • A. I1 = 0.416 mA, I2 = 0.416 mA
  • B. I1 = 0.357 mA, I2 = 0.357 mA
  • C. I1 = 1.25 mA, I2 = 0.625 mA
  • D. I1 = 0.625 mA, I2 = 1.25 mA

  • Correct Answer
  • I1 = 0.625 mA, I2 = 1.25 mA 

    • Interfacing to the Analog World problems

    Search Results

    • 1. What is the resolution of a D/A converter?

    • Options
    • A. the comparison between the actual output of the converter and its expected output
    • B. the reciprocal of the number of discrete steps in the D/A output
    • C. the deviation between the ideal straight-line output and the actual output of the converter
    • D. the ability to resolve between forward and reverse steps when sequenced over its entire range
      • Discuss
    • 2. The process by which a computer acquires digitized analog data is referred to as ________.

    • Options
    • A. data acquisition
    • B. monotonicity
    • C. analog resolution
    • D. systematic digital conversion
      • Discuss
    • 3. If the same analog signal is to be converted to an 8-bit resolution using a counter-ramp ADC, how many comparator circuits would be used?

    • Options
    • A. 1
    • B. 8
    • C. 127
    • D. 255
      • Discuss
    • 4. How many different voltages can be output from a DAC with a 6-bit resolution?

    • Options
    • A. 6
    • B. 16
    • C. 32
    • D. 64
      • Discuss
    • 5. Referring to the given figure, what appears to be wrong, if anything, with the output of the D/A converter?


    • Options
    • A. The input signal is probably noisy.
    • B. There appears to be some nonlinearity in the scope display.
    • C. The converter has a nonmonotonic output error.
    • D. It appears that certain input codes are incorrect; double-check the input coding.
      • Discuss
    • 6. An actuator is usually a device that:

    • Options
    • A. converts analog data to meaningful digital data.
    • B. controls a physical variable.
    • C. stores digital data and then processes that data according to a set of specified instructions.
    • D. converts a physical variable to an electrical variable.
      • Discuss
    • 7. Sample-and-hold circuits in A/D converters are designed to:

    • Options
    • A. sample and hold the output of the binary counter during the conversion process
    • B. stabilize the comparator's threshold voltage during the conversion process
    • C. stabilize the input analog signal during the conversion process
    • D. sample and hold the D/A converter staircase waveform during the conversion process
      • Discuss
    • 8. The main advantage of the successive-approximation A/D converter over the counter-ramp A/D converter is its:

    • Options
    • A. more complex circuitry
    • B. less complex circuitry
    • C. longer conversion time
    • D. shorter conversion time
      • Discuss
    • 9. What circuitry is on an ADC0808 IC?

    • Options
    • A. A multiplexer
    • B. An ADC
    • C. A 3-bit select input code
    • D. All of the above
      • Discuss
    • 10. The practical use of binary-weighted digital-to-analog converters is limited to:

    • Options
    • A. R/2R ladder D/A converters
    • B. 4-bit D/A converters
    • C. 8-bit D/A converters
    • D. op-amp comparators
      • Discuss

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