An analog quantity varies from 0?7 V and is input to a 6-bit A/D converter. What

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Question
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

Correct Answer

0.111 V

Interfacing to the Analog World problems

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4. 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.

5. 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

7. 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.

9. 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

10. 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

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