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Digital Electronics - Interfacing to the Analog World

Exercise : Interfacing to the Analog World - General Questions
46.
What is the linearity of a D/A converter?
It is the reciprocal of the number of discrete steps in the D/A output.
It is the comparison between the actual output of the converter and its expected output.
It is the converter's ability to resolve between forward and reverse steps when sequenced over its entire range of inputs.
It is the deviation between the ideal straight-line output and the actual output of the converter.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.

Referring to the given figure, what should the display on the scope look like if the A/D converter is working properly?

It should be a circular Lissajous pattern resulting from the simultaneous application of ramps to the vertical and horizontal inputs of the oscilloscope.
The pattern should be a straight line across the screen due to the equal but opposite voltages being applied to the scope inputs.
A uniform stairstep pattern should be displayed.
The scope should display a sequential binary count with the LSB on the left and the MSB on the right side of the display.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
What is the acquisition time of the AD1154 sample-and-hold IC?
1.5 s
2.5 s
3.5 s
4.5 s
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.

What type of DAC is shown below?

binary-weighted
R-2R ladder
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
What is the disadvantage to using a counter-ramp type ADC?
complex circuit
high cost
very slow
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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