A
63%
B
64%
C
1.56%
D
15.6%

Q2: The primary disadvantage of the flash analog-to digital converter (ADC) is that:

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

Q3: The practical use of binary-weighted digital-to-analog converters is limited to:

A
B
4-bit D/A converters
C
8-bit D/A converters
D
op-amp comparators

Q4: What is the resolution of a digital-to-analog converter (DAC)?

A
It is the comparison between the actual output of the converter and its expected output.
B
It is the deviation between the ideal straight-line output and the actual output of the converter.
C
It is the smallest analog output change that can occur as a result of an increment in the digital input.
D
It is its ability to resolve between forward and reverse steps when sequenced over its entire range.

Q5: Which of the following is a type of error associated with digital-to-analog converters (DACs)?

A
nonmonotonic error
B
incorrect output codes
C
offset error
D
nonmonotonic and offset error

A
decoder
B
priority encoder
C
multiplexer
D
demultiplexer

A
quantization
B
accuracy
C
resolution
D
monotonicity

Q8: Sample-and-hold circuits in analog-to digital converters (ADCs) are designed to:

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

A
50 A
B
5 mA
C
500 A
D
50 mA

Q10: Which is not an analog-to-digital (ADC) conversion error?

A
differential nonlinearity
B
missing code
C
incorrect code
D
offset

A
0.3125 V
B
3.125 V
C
0.78125 V
D
–3.125 V

A
0.6 V
B
–0.6 V
C
0.1 V
D
–0.1 V

Q13: What is the major advantage of the R/2R ladder digital-to-analog (DAC), as compared to a binary-weighted digital-to-analog DAC converter?

A
It only uses two different resistor values.
B
It has fewer parts for the same number of inputs.
C
Its operation is much easier to analyze.
D
The virtual ground is eliminated and the circuit is therefore easier to understand and troubleshoot.

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