What is the acquisition time of the AD1154 sample-and-hold IC? 1.5 �s 2.5 �s 3.5

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Question
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

Correct Answer

3.5 µs

Interfacing to the Analog World problems

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1. 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.

2. 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.

4. 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

5. What function is performed by the block labeled X in the given figure?
Options
A. Analog-to-digital conversion
B. Digital-to-analog conversion
C. Audio ON/OFF control
D. Power supply for the audio amplifier

6. 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

9. 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

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