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Digital Electronics - Interfacing to the Analog World

Exercise : Interfacing to the Analog World - General Questions
56.
The primary disadvantage of the simultaneous A/D converter is:
that it requires the input voltage to be applied to the inputs simultaneously
the long conversion time required
the large number of output lines required to simultaneously decode the input voltage
the large number of comparators required to represent a reasonable sized binary number
Answer: Option
Explanation:
No answer description is available. Let's discuss.
57.

What is the output voltage for the circuit shown below?

10 V
20 V
30 V
40 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
58.
Three characteristics of op amps make them almost ideal amplifiers: very high input impedance, very low impedance, and ________.
very high voltage gain
unlimited bandwidth
a low slew rate
very high current gain
Answer: Option
Explanation:
No answer description is available. Let's discuss.
59.
Sample-and-hold circuits in A/D converters are designed to:
sample and hold the output of the binary counter during the conversion process
stabilize the comparator's threshold voltage during the conversion process
stabilize the input analog signal during the conversion process
sample and hold the D/A converter staircase waveform during the conversion process
Answer: Option
Explanation:
No answer description is available. Let's discuss.
60.
What is the main disadvantage of the counter-ramp A/D converter?
It requires a counter.
The counter must count up from zero at the beginning of each conversion sequence, and the conversion time will vary depending on the input voltage.
It requires a precision clock in order for the conversion to be reliable.
The counter must count up from zero at the beginning of each conversion sequence, and the conversion time will vary depending on the input voltage. It requires a precision clock in order for the conversion to be reliable.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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