Analog and Digital Converters - General Questions Online Exam Quiz
Analog and Digital Converters - General Questions GK Quiz. Question and Answers related to Analog and Digital Converters - General Questions. MCQ (Multiple Choice Questions with answers about Analog and Digital Converters - General Questions
Which of the following is a type of error associated with digital-to-analog converters (DACs)?
Options
A : nonmonotonic error
B : incorrect output codes
C : offset error
D : nonmonotonic and offset error
A 4-bit R/2R digital-to-analog (DAC) converter has a reference of 5 volts. What is the analog output for the input code 0101.
Options
A : 0.3125 V
B : 3.125 V
C : 0.78125 V
D : –3.125 V
A binary-weighted digital-to-analog converter has an input resistor of 100 k . If the resistor is connected to a 5 V source, the current through the resistor is:
Options
A : 50 A
B : 5 mA
C : 500 A
D : 50 mA
What is the resolution of a digital-to-analog converter (DAC)?
Options
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.
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
The difference between analog voltage represented by two adjacent digital codes, or the analog step size, is the:
Options
A : quantization
B : accuracy
C : resolution
D : monotonicity
The primary disadvantage of the flash analog-to digital converter (ADC) is that:
Options
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
A binary-weighted digital-to-analog converter has a feedback resistor, R f , of 12 k . If 50 A of current is through the resistor, the voltage out of the circuit is:
Options
A : 0.6 V
B : –0.6 V
C : 0.1 V
D : –0.1 V
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?
Options
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.
The resolution of a 0–5 V 6-bit digital-to-analog converter (DAC) is:
Options
A : 63%
B : 64%
C : 1.56%
D : 15.6%
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