Analog and Digital Converts Questions and Answers
Analog and Digital Converts questions with answers test understanding of how continuous signals are converted into discrete digital data. These aptitude questions and answers with explanations are key for exams like GATE, ISRO, and ECIL. The topic covers ADCs (Analog-to-Digital Converters) and DACs (Digital-to-Analog Converters), their working principles, and accuracy parameters. Mastering this helps students grasp signal processing fundamentals, making it easier to tackle both theoretical and numerical problems in electronics aptitude and placement tests.
Study the methods of analog to digital signal conversion. Complement this with analogies and analog-to-digital conversion
Analog and Digital Converts
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22 questions
11. Which is not an analog-to-digital (ADC) conversion error?
- differential nonlinearity
- missing code
- incorrect code
- offset
12. Sample-and-hold circuits in analog-to digital converters (ADCs) are designed to:
- sample and hold the output of the binary counter during the conversion process
- stabilize the comparator's threshold voltage during the conversion process
- stabilize the input analog signal during the conversion process
- sample and hold the D/A converter staircase waveform during the conversion process
13. A sample-and-hold circuit samples an analog value and holds it long enough for the analog-to-digital conversion to occur.
- TRUE
- FALSE
14. Incorrect codes are a form of output error for a digital-to-analog converter (DAC).
- TRUE
- FALSE
15. If we double the number of bits in our digital representation of a number from 4 to 8 bits, we double the relative accuracy of the conversion from digital to analog.
- TRUE
- FALSE
16. The flash method of analog-to-digital conversion (ADC) uses comparators that compare reference voltages with the analog input voltage.
- TRUE
- FALSE
17. A digital-to-analog converter (DAC) is said to be nonmonotonic if the magnitude of the output voltage increases every time the input code increases.
- TRUE
- FALSE
18. The relative accuracy of a digital-to-analog converter (DAC) is determined by settling time.
- TRUE
- FALSE
19. The key advantage of the successive approximation analog-to-digital converter (ADC) is its conversion speed.
- TRUE
- FALSE
20. One way to determine the resolution of a digital-to-analog converter (DAC) is to compare the ratio of one step voltage to the maximum output voltage.
- TRUE
- FALSE