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- Question
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
- Correct Answer
- the large number of comparators required to represent a reasonable sized binary number
- 1. What is the acquisition time of the AD1154 sample-and-hold IC?
Options- A. 1.5 µs
- B. 2.5 µs
- C. 3.5 µs
- D. 4.5 µs Discuss
- 2. When comparing the conversions from digital-to-analog and analog-to-digital, the A/D conversion is generally:
Options- A. less complicated but more time consuming than the D/A conversion.
- B. more complicated and more time consuming than the D/A conversion.
- C. less complicated and less time consuming than the D/A conversion.
- D. more complicated but less time consuming than the D/A conversion. Discuss
- 3. Which of the following characterizes an analog quantity?
Options- A. Discrete levels represent changes in a quantity.
- B. Its values follow a logarithmic curve.
- C. It can be described with a finite number of steps.
- D. It has a continuous set of values over a given range. Discuss
- 4. What type of DAC is shown below?
Options- A. binary-weighted
- B. R-2R ladder Discuss
- 5. 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 Discuss
- 6. What is the speed of the up/down digital-ramp ADC (tracking ADC)?
Options- A. 20 µs
- B. 10 µs
- C. 1 µs
- D. Relatively slow Discuss
- 7. A TTL NAND gate with IIL(max) of ?1.6 mA per input drives eight TTL inputs. How much current does the drive output sink?
Options- A. ?12.8 mA
- B. ?8 mA
- C. ?1.6 mA
- D. ?25.6 mA Discuss
- 8. The greater the propagation delay, the ________.
Options- A. lower the maximum frequency
- B. higher the maximum frequency
- C. maximum frequency is unaffected
- D. minimum frequency is unaffected Discuss
- 9. Most TTL logic used today is some form of ________.
Options- A. Schottky TTL
- B. tristate TTL
- C. low-power TTL
- D. open-collector TTL Discuss
- 10. Which logic family combines the advantages of CMOS and TTL?
Options- A. BiCMOS
- B. TTL/CMOS
- C. ECL
- D. TTL/MOS Discuss
Interfacing to the Analog World problems
Search Results
Correct Answer: 3.5 µs
Correct Answer: more complicated and more time consuming than the D/A conversion.
Correct Answer: It has a continuous set of values over a given range.
Correct Answer: R-2R ladder
Correct Answer: more or less input voltage is required for the first step than what is specified
Correct Answer: Relatively slow
Correct Answer: ?12.8 mA
Correct Answer: lower the maximum frequency
Correct Answer: Schottky TTL
Correct Answer: BiCMOS
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