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- Question
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
- Correct Answer
- 90 microseconds
- 1. 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
- 2. A(n) ________ converts an analog input to a digital output.
Options- A. ADC
- B. DAC
- C. flash converter
- D. bipolar converter Discuss
- 3. 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
- 4. A digital voltmeter converts an analog voltage to its ________ representation.
Options- A. BCD-code
- B. decimal
- C. digital
- D. alias Discuss
- 5. The AD7524, a CMOS IC available from several IC manufacturers, is an eight-bit D/A converter that uses a(n) ________.
Options- A. sample-and-hold circuit
- B. R/2R ladder network
- C. multiplexer
- D. 10 µs clock Discuss
- 6. 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
- 7. 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 Discuss
- 8. A simultaneous A/D converter is also known as a(n) ________ A/D converter.
Options- A. flash
- B. synchronous
- C. comparator
- D. asynchronous Discuss
- 9. 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
- 10. 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
Interfacing to the Analog World problems
Search Results
Correct Answer: doubles
Correct Answer: ADC
Correct Answer: successive-approximation A/D converter
Correct Answer: BCD-code
Correct Answer: R/2R ladder network
Correct Answer: sample-and-hold circuit
Correct Answer: data acquisition
Correct Answer: flash
Correct Answer: filtering, conditioning
Correct Answer: a voltage level
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