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- Question
There are many applications in which analog data must be digitized and transferred into a computer's memory. The process by which the computer acquires these digitized analog data is referred to as ________.
Options- A. sampling
- B. multiplexing
- C. data acquisition
- D. prescaling
- Correct Answer
- data acquisition
- 1. The stability of the ADC process can be improved by using a(n) ________ to hold the analog voltage constant while the A/D conversion is taking place.
Options- A. sample-and-hold circuit
- B. op-amp comparator
- C. NPN amp
- D. current loop Discuss
- 2. A 4-bit stairstep-ramp A/D converter has a clock frequency of 100 kHz and a maximum input of 10 V, and has 6 V applied to the input. The conversion time will be ________.
Options- A. 10 microseconds
- B. 160 microseconds
- C. 90 microseconds
- D. 6250 seconds Discuss
- 3. For each bit that is added to a digital ramp ADC, the conversion time ________.
Options- A. doubles
- B. triples
- C. decreases by one-third
- D. decreases by one-half Discuss
- 4. A(n) ________ converts an analog input to a digital output.
Options- A. ADC
- B. DAC
- C. flash converter
- D. bipolar converter Discuss
- 5. The figure given below represents a ________.
Options- A. successive-approximation A/D converter
- B. dual-slope A/D converter
- C. tracking A/D converter
- D. dual-approximation D/A comparator Discuss
- 6. A simultaneous A/D converter is also known as a(n) ________ A/D converter.
Options- A. flash
- B. synchronous
- C. comparator
- D. asynchronous Discuss
- 7. A major application for DSP is in ________ and ________ of analog signals.
Options- A. sending, receiving
- B. digitizing, weighting
- C. filtering, conditioning
- D. leveling, translating Discuss
- 8. The input of an analog-to-digital converter is ________.
Options- A. a voltage level
- B. a clock pulse
- C. a binary number
- D. any of the above Discuss
- 9. The characteristic that a change of one binary step on the input of a DAC should cause exactly one step change on the output is called ________.
Options- A. resolution
- B. linearity
- C. monotonicity
- D. accuracy Discuss
- 10. On a binary-weighted D/A converter the least significant binary input ________.
Options- A. connects to the smallest resistor
- B. supplies the least voltage
- C. connects to a 1 kΩ resistor
- D. connects to the largest resistor Discuss
Interfacing to the Analog World problems
Search Results
Correct Answer: sample-and-hold circuit
Correct Answer: 90 microseconds
Correct Answer: doubles
Correct Answer: ADC
Correct Answer: successive-approximation A/D converter
Correct Answer: flash
Correct Answer: filtering, conditioning
Correct Answer: a voltage level
Correct Answer: monotonicity
Correct Answer: connects to the largest resistor
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