Discussion
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- Question
The output of the circuit in the given figure (a) at point X on figure (b) will be ________.
Options- A. 1.011 V
- B. 2.75 V
- C. ?1.011 V
- D. ?2.75 V
- Correct Answer
- ?2.75 V
- 1. The number of binary bits at the input of a DAC or the output of an ADC is known as ________.
Options- A. accuracy
- B. linearity
- C. resolution
- D. monotonicity Discuss
- 2. The circuit shown below is a(n) ________.
Options- A. R/2R ladder D/A converter
- B. four-bit decoder
- C. binary-weighted-input DAC
- D. four-bit A/D converter Discuss
- 3. The main advantage of the tracking A/D converter over the stairstep-ramp A/D converter is that ________.
Options- A. it does not require a counter
- B. it uses an up/down counter to indicate the polarity of the input voltage
- C. it uses an up/down counter to measure both positive and negative voltages
- D. it is faster Discuss
- 4. A counter-ramp ADC stops counting when ________.
Options- A. the input voltage equals the DAC staircase voltage
- B. the counter reaches a maximum count
- C. the input voltage equals 5 volts
- D. the DAC staircase voltage equals 5 volts Discuss
- 5. A counter-ramp ADC uses a comparator to compare the input voltage with ________.
Options- A. a binary number
- B. the output of a counter
- C. the output of a DAC
- D. a voltage divider network Discuss
- 6. ________ ADCs have a fixed value of conversion time that is not dependent on the value of the analog input.
Options- A. Substandard
- B. Dual
- C. Recessive-approximation
- D. Successive-approximation Discuss
- 7. A signal ________ is produced by sampling the signal at a rate less than the minimum rate identified by Nyquist.
Options- A. Nyquist
- B. sampling frequency
- C. basis
- D. alias Discuss
- 8. The fastest analog-to-digital converter is the ________.
Options- A. counter ADC
- B. successive-approximation ADC
- C. dual slope ADC
- D. parallel ADC Discuss
- 9. A binary-weighter resistor DAC is practical only up to a resolution of ________.
Options- A. 10 bits
- B. 2 bits
- C. 8 bits
- D. 4 bits Discuss
- 10. The primary disadvantage of the simultaneous A/D converter is ________.
Options- A. that it requires the input voltage to be applied to the inputs simultaneously
- B. the long conversion time required
- C. the large number of output lines required to simultaneously decode the input voltage
- D. the large number of comparators required to represent a reasonable-sized binary number Discuss
Interfacing to the Analog World problems
Search Results
Correct Answer: resolution
Correct Answer: R/2R ladder D/A converter
Correct Answer: it is faster
Correct Answer: the input voltage equals the DAC staircase voltage
Correct Answer: the output of a DAC
Correct Answer: Successive-approximation
Correct Answer: alias
Correct Answer: parallel ADC
Correct Answer: 4 bits
Correct Answer: the large number of comparators required to represent a reasonable-sized binary number
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