Question

Which of the following statement(s) about Digital-to-Analog (DAC) converter is/are correct?
(A) DAC is said to be monotonic if its output decreases as the binary input is incremented from one value to the next.
(B) Ideally, the output of a DAC should be zero when the binary input is zero.
(C) The operating speed of a DAC is usually specified by giving its settling time.
(D) Resolution is the reciprocal of the number of discrete steps in the full-scale output of the DAC.

• A. (A), (B), and (D) only
• B. (A), (B), and (C) only
• C. (A), (B), (C), and (D)
• D. (B), (C), and (D) only

Hint:

When working with DACs, ensure that you consider both resolution and settling time for accurate performance measurements.

Answer 1

The Correct Option is C

Step 1: Review each statement.
- Statement (A) is correct, as DACs are monotonic when their output increases or decreases consistently with the binary input.
- Statement (B) is also correct; in an ideal DAC, zero input should give zero output.
- Statement (C) is correct as well; the operating speed of a DAC is typically specified by its settling time, which defines how quickly it stabilizes at the correct output.
- Statement (D) is true; resolution is inversely related to the number of discrete output levels.

Final Answer: \[ \boxed{3. \text{(A), (B), (C), and (D)}} \]