Interfacing to the Analog World problems
- 1. In a binary-weighted D/A converter the sum of all the currents from the binary weighted resistors flows through the operational amplifier.
Options- A. True
- B. False Discuss
Correct Answer: False
- 2. The main advantage of the SAR ADC method is its high speed.
Options- A. True
- B. False Discuss
Correct Answer: True
- 3. Resolution in the analog output of a DAC is primarily dependent on the number of input binary bits.
Options- A. True
- B. False Discuss
Correct Answer: True
- 4. The delay between a change on the digital input of a DAC and the appearance of the change on the output is called settling time.
Options- A. True
- B. False Discuss
Correct Answer: True
- 5. The DSO ________, ________, and ________ analog waveforms.
Options- A. filters, conditions, sends
- B. levels, stores, weighs
- C. sends, receives, translates
- D. digitizes, stores, displays Discuss
Correct Answer: sends, receives, translates
- 6. 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
Correct Answer: R/2R ladder network
- 7. A digital voltmeter converts an analog voltage to its ________ representation.
Options- A. BCD-code
- B. decimal
- C. digital
- D. alias Discuss
Correct Answer: BCD-code
- 8. 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
Correct Answer: successive-approximation A/D converter
- 9. A(n) ________ converts an analog input to a digital output.
Options- A. ADC
- B. DAC
- C. flash converter
- D. bipolar converter Discuss
Correct Answer: ADC
- 10. 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
Correct Answer: doubles
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